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Wikipedia

Colorado

Colorado (/ˌkɒləˈræd, -ˈrɑːd/ (listen), other variants)[7][8][9] is a state in the Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains. Colorado is the eighth most extensive and 21st most populous U.S. state. The 2020 United States census enumerated the population of Colorado at 5,773,714, an increase of 14.80% since the 2010 United States census.[10]

Colorado
State of Colorado
Nicknames
Motto(s)
Nil sine numine
(English: Nothing without providence)
Anthem: "Where the Columbines Grow" and
"Rocky Mountain High"[1]
Map of the United States with Colorado highlighted
CountryUnited States
Admitted to the UnionAugust 1, 1876[2] (38th)
Capital
(and largest city)
Denver
Largest metro and urban areasDenver
Government
 • GovernorJared Polis (D)
 • Lieutenant GovernorDianne Primavera (D)
LegislatureGeneral Assembly
 • Upper houseSenate D-23 R-12
 • Lower houseHouse of Representatives D-46 R-19
JudiciaryColorado Supreme Court
U.S. senatorsMichael Bennet (D)
John Hickenlooper (D)
U.S. House delegation5 Democrats
3 Republicans (list)
Area
 • Total104,094 sq mi (269,837 km2)
 • Land103,718 sq mi (268,875 km2)
 • Water376 sq mi (962 km2)  0.36%
 • Rank8th
Dimensions
 • Length380 mi (610 km)
 • Width280 mi (450 km)
Elevation
6,800 ft (2,070 m)
Highest elevation14,440 ft (4,401.2 m)
Lowest elevation3,317 ft (1,011 m)
Population
 (2020)
 • Total5,773,714
 • Rank21st
 • Density55.47/sq mi (21.40/km2)
  • Rank37th
 • Median household income
$75,200[6]
 • Income rank
9th
DemonymColoradan
Language
 • Official languageEnglish
Time zoneUTC−07:00 (MST)
 • Summer (DST)UTC−06:00 (MDT)
USPS abbreviation
CO
ISO 3166 codeUS-CO
Latitude37°N to 41°N
Longitude102°02′48″W to 109°02′48″W
Websitewww.colorado.gov
Colorado state symbols
Living insignia
AmphibianWestern tiger salamander
Ambystoma mavortium
BirdLark bunting
Calamospiza melanocoryus
CactusClaret cup cactus
Echinocereus triglochidiatus
FishGreenback cutthroat trout
Oncorhynchus clarki somias
FlowerRocky Mountain columbine
Aquilegia coerulea
GrassBlue grama grass
Bouteloua gracilis
InsectColorado Hairstreak
Hypaurotis crysalus
MammalRocky Mountain bighorn sheep
Ovis canadensis
PetColorado shelter pets
Canis lupus familiaris
and Felis catus
ReptileWestern painted turtle
Chrysemys picta bellii
TreeColorado blue spruce
Picea pungens
Inanimate insignia
ColorsBlue, red, yellow, white
DinosaurStegosaurus
Folk danceSquare dance
Chorea quadra
FossilStegosaurus
Stegosaurus armatus
GemstoneAquamarine
MineralRhodochrosite
RockYule Marble
ShipUSS Colorado (SSN-788)
SloganColorful Colorado
SoilSeitz
SportPack burro racing
TartanColorado state tartan
State route marker
Lists of United States state symbols

The region has been inhabited by Native Americans and their ancestors for at least 13,500 years and possibly much longer. The eastern edge of the Rocky Mountains was a major migration route for early peoples who spread throughout the Americas. "Colorado" is the Spanish adjective meaning "ruddy", the color of the Fountain Formation outcroppings found up and down the Front Range of the Rocky Mountains.[11] The Territory of Colorado was organized on February 28, 1861,[12] and on August 1, 1876, U.S. President Ulysses S. Grant signed Proclamation 230 admitting Colorado to the Union as the 38th state.[2] Colorado is nicknamed the "Centennial State" because it became a state one century after the signing of the United States Declaration of Independence.

Colorado is bordered by Wyoming to the north, Nebraska to the northeast, Kansas to the east, Oklahoma to the southeast, New Mexico to the south, and Utah to the west, and touches Arizona to the southwest at the Four Corners. Colorado is noted for its vivid landscape of mountains, forests, high plains, mesas, canyons, plateaus, rivers, and desert lands. Colorado is one of the Mountain States, and is a part of the western and southwestern United States.

Denver is the capital of and most populous city in Colorado. Residents of the state are known as Coloradans, although the antiquated "Coloradoan" is occasionally used.[13][14] Major parts of the economy include government and defense, mining, agriculture, tourism, and increasingly other kinds of manufacturing. With increasing temperatures and decreasing water availability, Colorado's agriculture, forestry, and tourism economies are expected to be heavily affected by climate change.[15]

Colorado is one of the most educated, developed, and wealthiest states, ranking 3rd in percentage of population 25 and over with a bachelor's degree and 8th in percentage of population 25 and over with an advanced degree, 9th on the American Human Development Index, 8th in per capita income and 9th in median household income.

History

 
Great Kiva at Chimney Rock in the San Juan Mountains of Southwestern Colorado. It is said to have been built by the Ancient Pueblo peoples.

The region that is today the State of Colorado has been inhabited by Native Americans and their Paleoamerican ancestors for at least 13,500 years and possibly more than 37,000 years.[16][17] The eastern edge of the Rocky Mountains was a major migration route that was important to the spread of early peoples throughout the Americas. The Lindenmeier site in Larimer County contains artifacts dating from approximately 8720 BCE. The Ancient Pueblo peoples lived in the valleys and mesas of the Colorado Plateau.[18] The Ute Nation inhabited the mountain valleys of the Southern Rocky Mountains and the Western Rocky Mountains, even as far east as the Front Range of the present day. The Apache and the Comanche also inhabited Eastern and Southeastern parts of the state. In the 17th century, the Arapaho and Cheyenne moved west from the Great Lakes region to hunt across the High Plains of Colorado and Wyoming.

 
The Spanish discovering the Colorado River, namesake of the state, in 1540, by Augusto Ferrer-Dalmau. García López de Cárdenas can be seen overlooking the Grand Canyon.

The Spanish Empire claimed Colorado as part of its New Mexico province before U.S. involvement in the region. The U.S. acquired a territorial claim to the eastern Rocky Mountains with the Louisiana Purchase from France in 1803. This U.S. claim conflicted with the claim by Spain to the upper Arkansas River Basin as the exclusive trading zone of its colony of Santa Fe de Nuevo México. In 1806, Zebulon Pike led a U.S. Army reconnaissance expedition into the disputed region. Colonel Pike and his troops were arrested by Spanish cavalrymen in the San Luis Valley the following February, taken to Chihuahua, and expelled from Mexico the following July.

The U.S. relinquished its claim to all land south and west of the Arkansas River and south of 42nd parallel north and west of the 100th meridian west as part of its purchase of Florida from Spain with the Adams-Onís Treaty of 1819. The treaty took effect on February 22, 1821. Having settled its border with Spain, the U.S. admitted the southeastern portion of the Territory of Missouri to the Union as the state of Missouri on August 10, 1821. The remainder of Missouri Territory, including what would become northeastern Colorado, became an unorganized territory and remained so for 33 years over the question of slavery. After 11 years of war, Spain finally recognized the independence of Mexico with the Treaty of Córdoba signed on August 24, 1821. Mexico eventually ratified the Adams–Onís Treaty in 1831. The Texian Revolt of 1835–36 fomented a dispute between the U.S. and Mexico which eventually erupted into the Mexican–American War in 1846. Mexico surrendered its northern territory to the U.S. with the Treaty of Guadalupe Hidalgo after the war in 1848.

 
Map of the Mexican Cession, with the white representing the territory the United States received from Mexico (plus land ceded to the Republic of Texas) after the Mexican–American War. Well over half of Colorado was received during this treaty.

Most American settlers traveling overland west to the Oregon Country, the new goldfields of California, or the new Mormon settlements of the State of Deseret in the Salt Lake Valley, avoided the rugged Southern Rocky Mountains, and instead followed the North Platte River and Sweetwater River to South Pass (Wyoming), the lowest crossing of the Continental Divide between the Southern Rocky Mountains and the Central Rocky Mountains. In 1849, the Mormons of the Salt Lake Valley organized the extralegal State of Deseret, claiming the entire Great Basin and all lands drained by the rivers Green, Grand, and Colorado. The federal government of the U.S. flatly refused to recognize the new Mormon government, because it was theocratic and sanctioned plural marriage. Instead, the Compromise of 1850 divided the Mexican Cession and the northwestern claims of Texas into a new state and two new territories, the state of California, the Territory of New Mexico, and the Territory of Utah. On April 9, 1851, Mexican American settlers from the area of Taos settled the village of San Luis, then in the New Mexico Territory, later to become Colorado's first permanent Euro-American settlement.

 
The Anasazi Heritage Center in Dolores

In 1854, Senator Stephen A. Douglas persuaded the U.S. Congress to divide the unorganized territory east of the Continental Divide into two new organized territories, the Territory of Kansas and the Territory of Nebraska, and an unorganized southern region known as the Indian territory. Each new territory was to decide the fate of slavery within its boundaries, but this compromise merely served to fuel animosity between free soil and pro-slavery factions.

The gold seekers organized the Provisional Government of the Territory of Jefferson on August 24, 1859, but this new territory failed to secure approval from the Congress of the United States embroiled in the debate over slavery. The election of Abraham Lincoln for the President of the United States on November 6, 1860, led to the secession of nine southern slave states and the threat of civil war among the states. Seeking to augment the political power of the Union states, the Republican Party-dominated Congress quickly admitted the eastern portion of the Territory of Kansas into the Union as the free State of Kansas on January 29, 1861, leaving the western portion of the Kansas Territory, and its gold-mining areas, as unorganized territory.

Territory act

 
The territories of New Mexico, Utah, Kansas, and Nebraska before the creation of the Territory of Colorado

Thirty days later on February 28, 1861, outgoing U.S. President James Buchanan signed an Act of Congress organizing the free Territory of Colorado.[12] The original boundaries of Colorado remain unchanged except for government survey amendments. The name Colorado was chosen because it was commonly believed that the Colorado River originated in the territory.[a] In 1776, Spanish priest Silvestre Vélez de Escalante recorded that Native Americans in the area knew the river as el Rio Colorado for the red-brown silt that the river carried from the mountains.[19][failed verification] In 1859, a U.S. Army topographic expedition led by Captain John Macomb located the confluence of the Green River with the Grand River in what is now Canyonlands National Park in Utah.[20] The Macomb party designated the confluence as the source of the Colorado River.

On April 12, 1861, South Carolina artillery opened fire on Fort Sumter to start the American Civil War. While many gold seekers held sympathies for the Confederacy, the vast majority remained fiercely loyal to the Union cause.

In 1862, a force of Texas cavalry invaded the Territory of New Mexico and captured Santa Fe on March 10. The object of this Western Campaign was to seize or disrupt the gold fields of Colorado and California and to seize ports on the Pacific Ocean for the Confederacy. A hastily organized force of Colorado volunteers force-marched from Denver City, Colorado Territory, to Glorieta Pass, New Mexico Territory, in an attempt to block the Texans. On March 28, the Coloradans and local New Mexico volunteers stopped the Texans at the Battle of Glorieta Pass, destroyed their cannon and supply wagons, and dispersed 500 of their horses and mules.[21] The Texans were forced to retreat to Santa Fe. Having lost the supplies for their campaign and finding little support in New Mexico, the Texans abandoned Santa Fe and returned to San Antonio in defeat. The Confederacy made no further attempts to seize the Southwestern United States.

In 1864, Territorial Governor John Evans appointed the Reverend John Chivington as Colonel of the Colorado Volunteers with orders to protect white settlers from Cheyenne and Arapaho warriors who were accused of stealing cattle. Colonel Chivington ordered his troops to attack a band of Cheyenne and Arapaho encamped along Sand Creek. Chivington reported that his troops killed more than 500 warriors. The militia returned to Denver City in triumph, but several officers reported that the so-called battle was a blatant massacre of Indians at peace, that most of the dead were women and children, and that bodies of the dead had been hideously mutilated and desecrated. Three U.S. Army inquiries condemned the action, and incoming President Andrew Johnson asked Governor Evans for his resignation, but none of the perpetrators was ever punished. This event is now known as the Sand Creek massacre.

In the midst and aftermath of the Civil War, many discouraged prospectors returned to their homes, but a few stayed and developed mines, mills, farms, ranches, roads, and towns in Colorado Territory. On September 14, 1864, James Huff discovered silver near Argentine Pass, the first of many silver strikes. In 1867, the Union Pacific Railroad laid its tracks west to Weir, now Julesburg, in the northeast corner of the Territory. The Union Pacific linked up with the Central Pacific Railroad at Promontory Summit, Utah, on May 10, 1869, to form the First transcontinental railroad. The Denver Pacific Railway reached Denver in June the following year, and the Kansas Pacific arrived two months later to forge the second line across the continent. In 1872, rich veins of silver were discovered in the San Juan Mountains on the Ute Indian reservation in southwestern Colorado. The Ute people were removed from the San Juans the following year.

Statehood

 

The United States Congress passed an enabling act on March 3, 1875, specifying the requirements for the Territory of Colorado to become a state.[22] On August 1, 1876 (four weeks after the Centennial of the United States), U.S. President Ulysses S. Grant signed a proclamation admitting Colorado to the Union as the 38th state and earning it the moniker "Centennial State".[2]

The discovery of a major silver lode near Leadville in 1878 triggered the Colorado Silver Boom. The Sherman Silver Purchase Act of 1890 invigorated silver mining, and Colorado's last, but greatest, gold strike at Cripple Creek a few months later lured a new generation of gold seekers. Colorado women were granted the right to vote on November 7, 1893, making Colorado the second state to grant universal suffrage and the first one by a popular vote (of Colorado men). The repeal of the Sherman Silver Purchase Act in 1893 led to a staggering collapse of the mining and agricultural economy of Colorado, but the state slowly and steadily recovered. Between the 1880s and 1930s, Denver's floriculture industry developed into a major industry in Colorado.[23][24] This period became known locally as the Carnation Gold Rush.[25]

Twentieth and twenty-first centuries

Poor labor conditions and discontent among miners resulted in several major clashes between strikers and the Colorado National Guard, including the 1903–1904 Western Federation of Miners Strike and Colorado Coalfield War, the latter of which included the Ludlow massacre that killed a dozen women and children.[26][27] Both the 1913–1914 Coalfield War and the Denver streetcar strike of 1920 resulted in federal troops intervening to end the violence.[28] In 1927, the Columbine Mine massacre resulted in six dead strikers following a confrontation with Colorado Rangers.[29] More than 5,000 Colorado miners—many immigrants—are estimated to have died in accidents since records were first formally collected following an 1884 accident in Crested Butte that killed 59.[30]

In 1924, the Ku Klux Klan Colorado Realm achieved dominance in Colorado politics. With peak membership levels, the Second Klan levied significant control over both the local and state Democrat and Republican parties, particularly in the governor's office and city governments of Denver, Cañon City, and Durango. A particularly strong element of the Klan controlled the Denver Police.[31] Cross burnings became semi-regular occurrences in cities such as Florence and Pueblo. The Klan targeted African-Americans, Catholics, Eastern European immigrants, and other non-White Protestant groups.[32] Efforts by non-Klan lawmen and lawyers including Philip Van Cise lead to a rapid decline in the organization's power, with membership waning significantly by the end of the 1920s.[31]

 
Three 10th Mountain Division skitroopers above Camp Hale in February 1944.

Colorado became the first western state to host a major political convention when the Democratic Party met in Denver in 1908. By the U.S. census in 1930, the population of Colorado first exceeded one million residents. Colorado suffered greatly through the Great Depression and the Dust Bowl of the 1930s, but a major wave of immigration following World War II boosted Colorado's fortune. Tourism became a mainstay of the state economy, and high technology became an important economic engine. The United States Census Bureau estimated that the population of Colorado exceeded five million in 2009.

On September 11, 1957, a plutonium fire occurred at the Rocky Flats Plant, which resulted in the significant plutonium contamination of surrounding populated areas.[33]

From the 1940s and 1970s, many protest movements gained momentum in Colorado, predominantly in Denver. This included the Chicano Movement, a civil rights and social movement of Mexican Americans emphasizing a Chicano identity that is widely considered to have begun in Denver.[34] The National Chicano Liberation Youth Conference was held in Colorado in March 1969.[35]

In 1967, Colorado was the first state to loosen restrictions on abortion when governor John Love signed a law allowing abortions in cases of rape, incest, or threats to the woman's mental or physical health. Many states followed Colorado's lead in loosening abortion laws in the 1960s and 1970s.[36]

Since the late 1990s, Colorado has been the site of multiple major mass shootings, including the infamous Columbine High School massacre in 1999 which made international news, where Eric Harris and Dylan Klebold killed 12 students and one teacher, before committing suicide. The incident has since spawned many copycat incidents.[37] On July 20, 2012, a gunman killed 12 people in a movie theater in Aurora. The state responded with tighter restrictions on firearms, including introducing a limit on magazine capacity.[38] On March 22, 2021, a gunman killed 10 people, including a police officer, in a King Soopers supermarket in Boulder.[39]

Four warships of the U.S. Navy have been named the USS Colorado. The first USS Colorado was named for the Colorado River and served in the Civil War and later the Asiatic Squadron, where it was attacked during the 1871 Korean Expedition. The later three ships were named in honor of the state, the including an armored cruiser and the battleship USS Colorado, the latter of which was the lead ship of her class and served in World War II in the Pacific beginning in 1941. At the time of the attack on Pearl Harbor, the battleship USS Colorado was located at the naval base in San Diego, California, and thus went unscathed. The most recent vessel to bear the name USS Colorado is Virginia-class submarine USS Colorado (SSN-788), which was commissioned in 2018.[40]

Geography

 

Colorado is notable for its diverse geography, which includes alpine mountains, high plains, deserts with huge sand dunes, and deep canyons. In 1861, the United States Congress defined the boundaries of the new Territory of Colorado exclusively by lines of latitude and longitude, stretching from 37°N to 41°N latitude, and from 102°02′48″W to 109°02′48″W longitude (25°W to 32°W from the Washington Meridian).[12] After 161 years of government surveys, the borders of Colorado were officially defined by 697 boundary markers and 697 straight boundary lines.[41] Colorado, Wyoming, and Utah are the only states that have their borders defined solely by straight boundary lines with no natural features.[42] The southwest corner of Colorado is the Four Corners Monument at 36°59′56″N, 109°2′43″W.[43][44] The Four Corners Monument, located at the place where Colorado, New Mexico, Arizona, and Utah meet, is the only place in the United States where four states meet.[42]

Plains

 
The arid high plains in Southeastern Colorado

Approximately half of Colorado is flat and rolling land. East of the Rocky Mountains are the Colorado Eastern Plains of the High Plains, the section of the Great Plains within Nebraska at elevations ranging from roughly 3,350 to 7,500 feet (1,020 to 2,290 m).[45] The Colorado plains are mostly prairies but also include deciduous forests, buttes, and canyons. Precipitation averages 15 to 25 inches (380 to 640 mm) annually.[46]

Eastern Colorado is presently mainly farmland and rangeland, along with small farming villages and towns. Corn, wheat, hay, soybeans, and oats are all typical crops. Most villages and towns in this region boast both a water tower and a grain elevator. Irrigation water is available from both surface and subterranean sources. Surface water sources include the South Platte, the Arkansas River, and a few other streams. Subterranean water is generally accessed through artesian wells. Heavy usage of these wells for irrigation purposes caused underground water reserves to decline in the region. Eastern Colorado also hosts a considerable amount and range of livestock, such as cattle ranches and hog farms.[47]

Front Range

 
Front Range Peaks west of Denver

Roughly 70% of Colorado's population resides along the eastern edge of the Rocky Mountains in the Front Range Urban Corridor between Cheyenne, Wyoming, and Pueblo, Colorado. This region is partially protected from prevailing storms that blow in from the Pacific Ocean region by the high Rockies in the middle of Colorado. The "Front Range" includes Denver, Boulder, Fort Collins, Loveland, Castle Rock, Colorado Springs, Pueblo, Greeley, and other townships and municipalities in between. On the other side of the Rockies, the significant population centers in Western Colorado (which is not considered the "Front Range") are the cities of Grand Junction, Durango, and Montrose.

Mountains

Map this section's coordinates in "List of mountain peaks of Colorado" using: OpenStreetMap 
Download coordinates as: KML

To the west of the Great Plains of Colorado rises the eastern slope of the Rocky Mountains. Notable peaks of the Rocky Mountains include Longs Peak, Mount Evans, Pikes Peak, and the Spanish Peaks near Walsenburg, in southern Colorado. This area drains to the east and the southeast, ultimately either via the Mississippi River or the Rio Grande into the Gulf of Mexico.

The Rocky Mountains within Colorado contain 53 true peaks with a total of 58 that are 14,000 feet (4,267 m) or higher in elevation above sea level, known as fourteeners.[48] These mountains are largely covered with trees such as conifers and aspens up to the tree line, at an elevation of about 12,000 feet (3,658 m) in southern Colorado to about 10,500 feet (3,200 m) in northern Colorado. Above this tree line only alpine vegetation grows. Only small parts of the Colorado Rockies are snow-covered year-round.

Much of the alpine snow melts by mid-August except for a few snow-capped peaks and a few small glaciers. The Colorado Mineral Belt, stretching from the San Juan Mountains in the southwest to Boulder and Central City on the front range, contains most of the historic gold- and silver-mining districts of Colorado. Mount Elbert is the highest summit of the Rocky Mountains. The 30 highest major summits of the Rocky Mountains of North America are all within the state.

The summit of Mount Elbert at 14,440 feet (4,401.2 m) elevation in Lake County is the highest point in Colorado and the Rocky Mountains of North America.[3] Colorado is the only U.S. state that lies entirely above 1,000 meters elevation. The point where the Arikaree River flows out of Yuma County, Colorado, and into Cheyenne County, Kansas, is the lowest point in Colorado at 3,317 feet (1,011 m) elevation. This point, which is the highest low elevation point of any state,[4][49] is higher than the high elevation points of 18 states and the District of Columbia.

Continental Divide

 
Grays Peak at 14,278 feet (4,352 m) is the highest point on the Continental Divide in North America

The Continental Divide of the Americas extends along the crest of the Rocky Mountains. The area of Colorado to the west of the Continental Divide is called the Western Slope of Colorado. West of the Continental Divide, water flows to the southwest via the Colorado River and the Green River into the Gulf of California.

Within the interior of the Rocky Mountains are several large parks which are high broad basins. In the north, on the east side of the Continental Divide is the North Park of Colorado. The North Park is drained by the North Platte River, which flows north into Wyoming and Nebraska. Just to the south of North Park, but on the western side of the Continental Divide, is the Middle Park of Colorado, which is drained by the Colorado River. The South Park of Colorado is the region of the headwaters of the South Platte River.

South Central region

 
The high desert lands that make up the San Luis Valley in Southern Colorado

In south-central Colorado is the large San Luis Valley, where the headwaters of the Rio Grande are located. The valley sits between the Sangre De Cristo Mountains and San Juan Mountains, and consists of large desert lands that eventually run into the mountains. The Rio Grande drains due south into New Mexico, Mexico, and Texas. Across the Sangre de Cristo Range to the east of the San Luis Valley lies the Wet Mountain Valley. These basins, particularly the San Luis Valley, lie along the Rio Grande Rift, a major geological formation of the Rocky Mountains, and its branches.

Colorado Western Slope

 
Maroon Bells, at 14,163 ft (4,317 m), is part of White River National Forest and a tourist destination
 
The Colorado National Monument near Grand Junction is made up of high desert canyons and sandstone rock formations

The Western Slope area of Colorado includes the western face of the Rocky Mountains and all of the states to the western border. This area includes several terrains and climates from alpine mountains to arid deserts. The Western Slope includes many ski resort towns in the Rocky Mountains and towns west of the mountains. It is less populous than the Front Range but includes a large number of national parks and monuments.

From west to east, the land of Colorado consists of desert lands, desert plateaus, alpine mountains, National Forests, relatively flat grasslands, scattered forests, buttes, and canyons on the western edge of the Great Plains. The famous Pikes Peak is located just west of Colorado Springs. Its isolated peak is visible from nearly the Kansas border on clear days, and also far to the north and the south.[50] The northwestern corner of Colorado is a sparsely populated region, and it contains part of the noted Dinosaur National Monument, which not only is a paleontological area, but is also a scenic area of rocky hills, canyons, arid desert, and streambeds. Here, the Green River briefly crosses over into Colorado. Desert lands in Colorado are located in and around areas such as the Pueblo, Canon City, Florence, Great Sand Dunes National Park and Preserve, San Luis Valley, Cortez, Canyon of the Ancients National Monument, Hovenweep National Monument, Ute Mountain, Delta, Grand Junction, Colorado National Monument, and other areas surrounding the Uncompahgre Plateau and Uncompahgre National Forest.

The Western Slope of Colorado is drained by the Colorado River and its tributaries (primarily the Gunnison River, Green River, and the San Juan River), or by evaporation in its arid areas. The Colorado River flows through Glenwood Canyon, and then through an arid valley made up of desert from Rifle to Parachute, through the desert canyon of De Beque Canyon, and into the arid desert of Grand Valley, where the city of Grand Junction is located. Also prominent in or near the southern portion of the Western Slope is the Grand Mesa, which lies to the southeast of Grand Junction; the high San Juan Mountains, a rugged mountain range; and to the west of the San Juan Mountains, the Colorado Plateau, a high arid region that borders Southern Utah.

Grand Junction, Colorado is the largest city on the Western Slope. Grand Junction and Durango are the only major centers of television broadcasting west of the Continental Divide in Colorado, though most mountain resort communities publish daily newspapers. Grand Junction is located along Interstate 70, the only major highway in Western Colorado. Grand Junction is also along the major railroad of the Western Slope, the Union Pacific. This railroad also provides the tracks for Amtrak's California Zephyr passenger train, which crosses the Rocky Mountains between Denver and Grand Junction via a route on which there are no continuous highways.

The Western Slope includes multiple notable destinations in the Colorado Rocky Mountains, including Glenwood Springs, with its resort hot springs, and the ski resorts of Aspen, Breckenridge, Vail, Crested Butte, Steamboat Springs, and Telluride.

Higher education in and near the Western Slope can be found at Colorado Mesa University in Grand Junction, Western Colorado University in Gunnison, Fort Lewis College in Durango, and Colorado Mountain College in Glenwood Springs and Steamboat Springs.

The Four Corners Monument in the southwest corner of Colorado marks the common boundary of Colorado, New Mexico, Arizona, and Utah; the only such place in the United States.

Climate

 
Köppen climate types of Colorado, using 1991-2020 climate normals.

The climate of Colorado is more complex than states outside of the Mountain States region. Unlike most other states, southern Colorado is not always warmer than northern Colorado. Most of Colorado is made up of mountains, foothills, high plains, and desert lands. Mountains and surrounding valleys greatly affect the local climate. Northeast, east, and southeast Colorado are mostly the high plains, while Northern Colorado is a mix of high plains, foothills, and mountains. Northwest and west Colorado are predominantly mountainous, with some desert lands mixed in. Southwest and southern Colorado are a complex mixture of desert and mountain areas.

Eastern Plains

The climate of the Eastern Plains is semi-arid (Köppen climate classification: BSk) with low humidity and moderate precipitation, usually from 15 to 25 inches (380 to 640 millimeters) annually, although many areas near the rivers is semi-humid climate. The area is known for its abundant sunshine and cool, clear nights, which give this area a great average diurnal temperature range. The difference between the highs of the days and the lows of the nights can be considerable as warmth dissipates to space during clear nights, the heat radiation not being trapped by clouds. The Front Range urban corridor, where most of the population of Colorado resides, lies in a pronounced precipitation shadow as a result of being on the lee side of the Rocky Mountains.[51]

In summer, this area can have many days above 95 °F (35 °C) and often 100 °F (38 °C).[52] On the plains, the winter lows usually range from 25 to −10 °F (−4 to −23 °C). About 75% of the precipitation falls within the growing season, from April to September, but this area is very prone to droughts. Most of the precipitation comes from thunderstorms, which can be severe, and from major snowstorms that occur in the winter and early spring. Otherwise, winters tend to be mostly dry and cold.[53]

In much of the region, March is the snowiest month. April and May are normally the rainiest months, while April is the wettest month overall. The Front Range cities closer to the mountains tend to be warmer in the winter due to Chinook winds which warm the area, sometimes bringing temperatures of 70 °F (21 °C) or higher in the winter.[53] The average July temperature is 55 °F (13 °C) in the morning and 90 °F (32 °C) in the afternoon. The average January temperature is 18 °F (−8 °C) in the morning and 48 °F (9 °C) in the afternoon, although variation between consecutive days can be 40 °F (20 °C).

Front Range foothills

Just west of the plains and into the foothills, there is a wide variety of climate types. Locations merely a few miles apart can experience entirely different weather depending on the topography. Most valleys have a semi-arid climate not unlike the eastern plains, which transitions to an alpine climate at the highest elevations. Microclimates also exist in local areas that run nearly the entire spectrum of climates, including subtropical highland (Cfb/Cwb), humid subtropical (Cfa), humid continental (Dfa/Dfb), Mediterranean (Csa/Csb) and subarctic (Dfc).[54]

Extreme weather

Extreme weather changes are common in Colorado, although a significant portion of the extreme weather occurs in the least populated areas of the state. Thunderstorms are common east of the Continental Divide in the spring and summer, yet are usually brief. Hail is a common sight in the mountains east of the Divide and across the eastern Plains, especially the northeast part of the state. Hail is the most commonly reported warm-season severe weather hazard, and occasionally causes human injuries, as well as significant property damage.[55] The eastern Plains are subject to some of the biggest hail storms in North America.[46] Notable examples are the severe hailstorms that hit Denver on July 11, 1990[56] and May 8, 2017, the latter being the costliest ever in the state.[57]

The Eastern Plains are part of the extreme western portion of Tornado Alley; some damaging tornadoes in the Eastern Plains include the 1990 Limon F3 tornado and the 2008 Windsor EF3 tornado, which devastated a small town.[58] Portions of the eastern Plains see especially frequent tornadoes, both those spawned from mesocyclones in supercell thunderstorms and from less intense landspouts, such as within the Denver convergence vorticity zone (DCVZ).[55]

The Plains are also susceptible to occasional floods and particularly severe flash floods, which are caused both by thunderstorms and by the rapid melting of snow in the mountains during warm weather. Notable examples include the 1965 Denver Flood,[59] the Big Thompson River flooding of 1976 and the 2013 Colorado floods. Hot weather is common during summers in Denver. The city's record in 1901 for the number of consecutive days above 90 °F (32 °C) was broken during the summer of 2008. The new record of 24 consecutive days surpassed the previous record by almost a week.[60]

Much of Colorado is very dry, with the state averaging only 17 inches (430 millimeters) of precipitation per year statewide. The state rarely experiences a time when some portion is not in some degree of drought.[61] The lack of precipitation contributes to the severity of wildfires in the state, such as the Hayman Fire of 2002. Other notable fires include the Fourmile Canyon Fire of 2010, the Waldo Canyon Fire and High Park Fire of June 2012, and the Black Forest Fire of June 2013. Even these fires were exceeded in severity by the Pine Gulch Fire, Cameron Peak Fire, and East Troublesome Fire in 2020, all being the three largest fires in Colorado history (see 2020 Colorado wildfires). And the Marshall Fire which started on December 30, 2021, while not the largest in state history, was the most destructive ever in terms of property loss (see Marshall Fire).

However, some of the mountainous regions of Colorado receive a huge amount of moisture from winter snowfalls. The spring melts of these snows often cause great waterflows in the Yampa River, the Colorado River, the Rio Grande, the Arkansas River, the North Platte River, and the South Platte River.

Water flowing out of the Colorado Rocky Mountains is a very significant source of water for the farms, towns, and cities of the southwest states of New Mexico, Arizona, Utah, and Nevada, as well as the Midwest, such as Nebraska and Kansas, and the southern states of Oklahoma and Texas. A significant amount of water is also diverted for use in California; occasionally (formerly naturally and consistently), the flow of water reaches northern Mexico.

Climate change

Climate change in Colorado encompasses the effects of climate change, attributed to man-made increases in atmospheric carbon dioxide, in the U.S. state of Colorado.

In 2019 The Denver Post reported that "[i]ndividuals living in southeastern Colorado are more vulnerable to potential health effects from climate change than residents in other parts of the state".[62] The United States Environmental Protection Agency has more broadly reported:

"Colorado's climate is changing. Most of the state has warmed one or two degrees (F) in the last century. Throughout the western United States, heat waves are becoming more common, snow is melting earlier in spring, and less water flows through the Colorado River.[63][64] Rising temperatures[65] and recent droughts[66] in the region have killed many trees by drying out soils, increasing the risk of forest fires, or enabling outbreaks of forest insects. In the coming decades, the changing climate is likely to decrease water availability and agricultural yields in Colorado, and further increase the risk of wildfires".[67]

Records

The highest official ambient air temperature ever recorded in Colorado was 115 °F (46.1 °C) on July 20, 2019, at John Martin Dam. The lowest official air temperature was −61 °F (−51.7 °C) on February 1, 1985, at Maybell.[68][69]

Monthly normal high and low temperatures for various Colorado cities[70] (°F) (°C)
City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Alamosa 34/−2
2/−19
40/6
4/−14
50/17
10/−8
59/24
15/−4
69/33
21/1
79/41
26/5
82/47
28/8
80/46
27/8
73/40
23/4
62/25
17/−4
47/12
8/−11
35/1
2/−17
Colorado Springs 43/18
6/−8
45/20
7/−7
52/26
11/−3
60/33
16/1
69/43
21/6
79/51
26/11
85/57
29/14
82/56
28/13
75/47
24/8
63/36
17/2
51/25
11/−4
42/18
6/−8
Denver 49/20
9/−7
49/21
9/−6
56/29
13/−2
64/35
18/2
73/46
23/8
84/54
29/12
92/61
33/16
89/60
32/16
81/50
27/10
68/37
20/3
55/26
13/−3
47/18
8/−8
Grand Junction 38/17
3/−8
45/24
7/−4
57/31
14/-1
65/38
18/3
76/47
24/8
88/56
31/13
93/63
34/17
90/61
32/16
80/52
27/11
66/40
19/4
51/28
11/−2
39/19
4/−7
Pueblo 47/14
8/−10
51/17
11/−8
59/26
15/−3
67/34
19/1
77/44
25/7
87/53
31/12
93/59
34/15
90/58
32/14
82/48
28/9
69/34
21/1
56/23
13/−5
46/14
8/−10

Earthquakes

Despite its mountainous terrain, Colorado is relatively quiet seismically. The U.S. National Earthquake Information Center is located in Golden.

On August 22, 2011, a 5.3 magnitude earthquake occurred 9 miles (14 km) west-southwest of the city of Trinidad.[71] There were no casualties and only a small amount of damage was reported. It was the second-largest earthquake in Colorado's history. A magnitude 5.7 earthquake was recorded in 1973.[72]

In early morning hours of August 24, 2018, four minor earthquakes rattled Colorado, ranging from magnitude 2.9 to 4.3.[73]

Colorado has recorded 525 earthquakes since 1973, a majority of which range 2 to 3.5 on the Richter scale.[74]

Fauna

 
Breckenridge naturalist Edwin Carter with a mounted gray wolf killed in the Colorado Rockies, ca. 1890–1900.

A process of extirpation by trapping and poisoning of the gray wolf (Canis lupus) from Colorado in the 1930s saw the last wild wolf in the state shot in 1945.[75] A wolf pack recolonized Moffat County, Colorado in northwestern Colorado in 2019.[76] Cattle farmers have expressed concern that a returning wolf population potentially threatens their herds.[75] Coloradoans voted to reintroduce gray wolves in 2020, with the state committing to a plan to have a population in the state by 2022 and permitting non-lethal methods of driving off wolves attacking livestock and pets.[77][78]

While there is fossil evidence of Harrington's mountain goat in Colorado between at least 800,000 years ago and its extinction with megafauna roughly 11,000 years ago, the mountain goat is not native to Colorado but was instead introduced to the state over time during the interval between 1947 and 1972. Despite being an artificially-introduced species, the state declared mountain goats a native species in 1993.[79] In 2013, 2014, and 2019, an unknown illness killed nearly all mountain goat kids, leading to a Colorado Parks and Wildlife investigation.[80][81]

The native population of pronghorn in Colorado has varied wildly over the last century, reaching a low of only 15,000 individuals during the 1960s. However, conservation efforts succeeded in bring the stable population back up to roughly 66,000 by 2013.[82] The population was estimated to have reached 85,000 by 2019 and had increasingly more run-ins with the increased suburban housing along the eastern Front Range. State wildlife officials suggested that landowners would need to modify fencing to allow the greater number of pronghorns to move unabated through the newly developed land.[83] Pronghorns are most readily found in the northern and eastern portions of the state, with some populations also in the western San Juan Mountains.[84]

Common wildlife found in the mountains of Colorado include mule deer, southwestern red squirrel, golden-mantled ground squirrel, yellow-bellied marmot, moose, American pika, and red fox, all at exceptionally high numbers, though moose are not native to the state.[85][86][87][88] The foothills include deer, fox squirrel, desert cottontail, mountain cottontail, and coyote.[89][90] The prairies are home to black-tailed prairie dog, the endangered swift fox, American badger, and white-tailed jackrabbit.[91][92][93]

Counties

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The State of Colorado is divided into 64 counties. Two of these counties, the City and County of Broomfield and the City and County of Denver, have consolidated city and county governments. Counties are important units of government in Colorado since there are no civil townships or other minor civil divisions.

The most populous county in Colorado is El Paso County, the home of the City of Colorado Springs. The second most populous county is the City and County of Denver, the state capital. Five of the 64 counties now have more than 500,000 residents, while 12 have fewer than 5,000 residents. The ten most populous Colorado counties are all located in the Front Range Urban Corridor. Mesa County is the most populous county on the Colorado Western Slope.[b]

Municipalities

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Colorado has 272 active incorporated municipalities, comprising 197 towns, 73 cities, and two consolidated city and county governments.[95][96] At the 2020 United States census, 4,299,942 of the 5,773,714 Colorado residents (74.47%) lived in one of these 272 municipalities. Another 714,417 residents (12.37%) lived in one of the 210 census-designated places, while the remaining 759,355 residents (13.15%) lived in the many rural and mountainous areas of the state.[10]

Colorado municipalities operate under one of five types of municipal governing authority. Colorado currently has two consolidated city and county governments, 61 home rule cities, 12 statutory cities, 35 home rule towns, 161 statutory towns, and one territorial charter municipality.

The most populous municipality is the City and County of Denver. Colorado now has 13 municipalities with more than 100,000 residents, and 17 with fewer than 100 residents. The 16 most populous Colorado municipalities are all located in the Front Range Urban Corridor. The City of Grand Junction is the most populous municipality on the Colorado Western Slope. The Town of Carbonate has had no year-round population since the 1890 census due to its severe winter weather and difficult access.[e]

 
The evening skyline of downtown Denver
The 20 most populous Colorado municipalities

2021 Rank[e] Municipality County 2021 Population[e]
1 City and County of Denver City and County of Denver 711,463
2 City of Colorado Springs El Paso County 483,956
3 City of Aurora Arapahoe, Adams, and Douglas counties 389,347
4 City of Fort Collins Larimer County 168,538
5 City of Lakewood Jefferson County 156,605
6 City of Thornton Adams and Weld counties 142,610
7 City of Arvada Jefferson and Adams counties 123,436
8 City of Westminster Adams and Jefferson counties 114,561
9 City of Pueblo Pueblo County 112,368
10 City of Greeley Weld County 109,323
11 City of Centennial Arapahoe County 106,966
12 City of Boulder Boulder County 104,175
13 City of Longmont Boulder and Weld counties 100,758
14 City of Loveland Larimer County 77,194
15 Town of Castle Rock Douglas County 76,353
16 City and County of Broomfield City and County of Broomfield 75,325
17 City of Grand Junction Mesa County 66,964
18 City of Commerce City Adams County 64,287
19 Town of Parker Douglas County 60,313
20 City of Littleton Arapahoe, Jefferson, and Douglas counties 45,191

Unincorporated communities

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In addition to its 272 municipalities, Colorado has 210 unincorporated census-designated places (CDPs) and many other small communities. The most populous unincorporated community in Colorado is Highlands Ranch south of Denver. The seven most populous CDPs are located in the Front Range Urban Corridor. The Clifton CDP is the most populous CDP on the Colorado Western Slope.[98]

Special districts

Colorado has more than 4,000 special districts, most with property tax authority. These districts may provide schools, law enforcement, fire protection, water, sewage, drainage, irrigation, transportation, recreation, infrastructure, cultural facilities, business support, redevelopment, or other services.

Some of these districts have the authority to levy sales tax as well as property tax and use fees. This has led to a hodgepodge of sales tax and property tax rates in Colorado. There are some street intersections in Colorado with a different sales tax rate on each corner, sometimes substantially different.

Some of the more notable Colorado districts are:

  • The Regional Transportation District (RTD), which affects the counties of Denver, Boulder, Jefferson, and portions of Adams, Arapahoe, Broomfield, and Douglas Counties
  • The Scientific and Cultural Facilities District (SCFD), a special regional tax district with physical boundaries contiguous with county boundaries of Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, and Jefferson Counties
    • It is a 0.1% retail sales and uses tax (one penny on every $10).
    • According to the Colorado statute, the SCFD distributes the money to local organizations on an annual basis. These organizations must provide for the enlightenment and entertainment of the public through the production, presentation, exhibition, advancement, or preservation of art, music, theater, dance, zoology, botany, natural history, or cultural history.
    • As directed by statute, SCFD recipient organizations are currently divided into three "tiers" among which receipts are allocated by percentage.
      • Tier I includes regional organizations: the Denver Art Museum, the Denver Botanic Gardens, the Denver Museum of Nature and Science, the Denver Zoo, and the Denver Center for the Performing Arts. It receives 65.5%.
      • Tier II currently includes 26 regional organizations. Tier II receives 21%.
      • Tier III has more than 280 local organizations such as small theaters, orchestras, art centers, natural history, cultural history, and community groups. Tier III organizations apply for funding from the county cultural councils via a grant process. This tier receives 13.5%.
    • An 11-member board of directors oversees the distributions by the Colorado Revised Statutes. Seven board members are appointed by county commissioners (in Denver, the Denver City Council) and four members are appointed by the Governor of Colorado.
  • The Football Stadium District (FD or FTBL), approved by the voters to pay for and help build the Denver Broncos' stadium Empower Field at Mile High.
  • Local Improvement Districts (LID) within designated areas of Jefferson and Broomfield counties.
  • The Metropolitan Major League Baseball Stadium District, approved by voters to pay for and help build the Colorado Rockies' stadium Coors Field.
  • Regional Transportation Authority (RTA) taxes at varying rates in Basalt, Carbondale, Glenwood Springs, and Gunnison County.

Statistical areas

 
An enlargeable map of the 17 core-based statistical areas of Colorado

Most recently on March 6, 2020, the Office of Management and Budget defined 21 statistical areas for Colorado comprising four combined statistical areas, seven metropolitan statistical areas, and ten micropolitan statistical areas.[99]

The most populous of the seven metropolitan statistical areas in Colorado is the 10-county Denver-Aurora-Lakewood, CO Metropolitan Statistical Area with a population of 2,963,821 at the 2020 United States census, an increase of +15.29% since the 2010 census.[10]

The more extensive 12-county Denver-Aurora, CO Combined Statistical Area had a population of 3,623,560 at the 2020 census, an increase of +17.23% since the 2010 census.[10]

The most populous extended metropolitan region in Rocky Mountain Region is the 18-county Front Range Urban Corridor along the northeast face of the Southern Rocky Mountains. This region with Denver at its center had a population of 5,055,344 at the 2020 census, an increase of +16.65% since the 2010 census.[10]

Demographics

 
Colorado population density map

The 2020 United States census enumerated the population of the State of Colorado at 5,773,714, an increase of 14.80% since the 2010 United States census.[10] The largest future increases are expected in the Front Range Urban Corridor.

Historical population
Census Pop.
186034,277
187039,86416.3%
1880194,327387.5%
1890413,249112.7%
1900539,70030.6%
1910799,02448.0%
1920939,62917.6%
19301,035,79110.2%
19401,123,2968.4%
19501,325,08918.0%
19601,753,94732.4%
19702,207,25925.8%
19802,889,96430.9%
19903,294,39414.0%
20004,301,26230.6%
20105,029,19616.9%
20205,773,71414.8%
U.S. Decennial Census
Ethnic composition as of the 2020 census
Race and Ethnicity[100] Non-Hispanic Total
White (non-Hispanic) 65.1% 65.1
 
69.4% 69.4
 
Hispanic or Latino[f] 21.9% 21.9
 
Black (non-Hispanic) 3.8% 3.8
 
4.9% 4.9
 
Asian 3.4% 3.4
 
4.7% 4.7
 
Native American 0.6% 0.6
 
2.1% 2.1
 
Pacific Islander 0.2% 0.2
 
0.4% 0.4
 
Other 0.5% 0.5
 
1.5% 1.5
 
Colorado historical racial demographics
Racial composition 1970[101] 1990[101] 2000[102] 2010[103]
White (includes White Hispanics) 95.7% 88.2% 82.8% 81.3%
Black 3.0% 4.0% 3.8% 4.0%
Asian 0.5% 1.8% 2.2% 2.8%
Native 0.4% 0.8% 1.0% 1.1%
Native Hawaiian and
other Pacific Islander
0.1% 0.1%
Other race 0.4% 5.1% 7.2% 7.2%
Two or more races 2.8% 3.4%
 
Map of counties in Colorado by racial plurality, per the 2020 U.S. census
Legend

People of Hispanic and Latino American (of any race made) heritage made up 20.7% of the population.[104] According to the 2000 census, the largest ancestry groups in Colorado are German (22%) including of Swiss and Austrian nationalities, Mexican (18%), Irish (12%), and English (12%). Persons reporting German ancestry are especially numerous in the Front Range, the Rockies (west-central counties), and Eastern parts/High Plains.

Colorado has a high proportion of Hispanic, mostly Mexican-American, citizens in Metropolitan Denver, Colorado Springs, as well as the smaller cities of Greeley and Pueblo, and elsewhere. Southern, Southwestern, and Southeastern Colorado has a large number of Hispanos, the descendants of the early settlers of colonial Spanish origin. In 1940, the U.S. Census Bureau reported Colorado's population as 8.2% Hispanic and 90.3% non-Hispanic white.[105] The Hispanic population of Colorado has continued to grow quickly over the past decades. By 2019, Hispanics made up 22% of Colorado's population, and Non-Hispanic Whites made up 70%.[106] Spoken English in Colorado has many Spanish idioms.[107]

Colorado also has some large African-American communities located in Denver, in the neighborhoods of Montbello, Five Points, Whittier, and many other East Denver areas. The state has sizable numbers of Asian-Americans of Mongolian, Chinese, Filipino, Korean, Southeast Asian, and Japanese descent. The highest population of Asian Americans can be found on the south and southeast side of Denver, as well as some on Denver's southwest side. The Denver metropolitan area is considered more liberal and diverse than much of the state when it comes to political issues and environmental concerns.

There were a total of 70,331 births in Colorado in 2006. (Birth rate of 14.6 per thousand.) In 2007, non-Hispanic whites were involved in 59.1% of all the births.[108] Some 14.06% of those births involved a non-Hispanic white person and someone of a different race, most often with a couple including one Hispanic. A birth where at least one Hispanic person was involved counted for 43% of the births in Colorado.[109] As of the 2010 census, Colorado has the seventh highest percentage of Hispanics (20.7%) in the U.S. behind New Mexico (46.3%), California (37.6%), Texas (37.6%), Arizona (29.6%), Nevada (26.5%), and Florida (22.5%). Per the 2000 census, the Hispanic population is estimated to be 918,899 or approximately 20% of the state total population. Colorado has the 5th-largest population of Mexican-Americans, behind California, Texas, Arizona, and Illinois. In percentages, Colorado has the 6th-highest percentage of Mexican-Americans, behind New Mexico, California, Texas, Arizona, and Nevada.[110]

Birth data

In 2011, 46% of Colorado's population younger than the age of one were minorities, meaning that they had at least one parent who was not non-Hispanic white.[111][112]

Note: Births in table don't add up, because Hispanics are counted both by their ethnicity and by their race, giving a higher overall number.

Live Births by Single Race/Ethnicity of Mother
Race 2013[113] 2014[114] 2015[115] 2016[116] 2017[117] 2018[118] 2019[119] 2020[120]
White: 57,491 (88.4%) 58,117 (88.3%) 58,756 (88.2%) ... ... ... ... ...
> non-Hispanic White 39,872 (61.3%) 40,629 (61.7%) 40,878 (61.4%) 39,617 (59.5%) 37,516 (58.3%) 36,466 (58.0%) 36,022 (57.3%) 34,924 (56.8%)
Black 3,760 (5.8%) 3,926 (6.0%) 4,049 (6.1%) 3,004 (4.5%) 3,110 (4.8%) 3,032 (4.8%) 3,044 (4.8%) 3,146 (5.1%)
Asian 2,863 (4.4%) 3,010 (4.6%) 2,973 (4.5%) 2,617 (3.9%) 2,611 (4.1%) 2,496 (4.0%) 2,540 (4.0%) 2,519 (4.1%)
American Indian 793 (1.2%) 777 (1.2%) 803 (1.2%) 412 (0.6%) 421 (0.7%) 352 (0.6%) 365 (0.6%) 338 (0.5%)
Pacific Islander ... ... ... 145 (0.2%) 145 (0.2%) 155 (0.2%) 168 (0.3%) 169 (0.3%)
Hispanic (of any race) 17,821 (27.4%) 17,665 (26.8%) 18,139 (27.2%) 18,513 (27.8%) 18,125 (28.2%) 17,817 (28.3%) 18,205 (29.0%) 18,111 (29.4%)
Total Colorado 65,007 (100%) 65,830 (100%) 66,581 (100%) 66,613 (100%) 64,382 (100%) 62,885 (100%) 62,869 (100%) 61,494 (100%)
  • Since 2016, data for births of White Hispanic origin are not collected, but included in one Hispanic group; persons of Hispanic origin may be of any race.

In 2017, Colorado recorded the second-lowest fertility rate in the United States outside of New England, after Oregon, at 1.63 children per woman.[117] Significant, contributing factors to the decline in pregnancies were the Title X Family Planning Program and an intrauterine device grant from Warren Buffett's family.[121][122]

Language

English, the official language of the state, is the most commonly spoken in Colorado, followed by Spanish.[123] One Native American language still spoken in Colorado is the Colorado River Numic language also known as the Ute dialect.

Religion

Religion in Colorado (2014)[124]
Religion Percent
Protestant
44%
No Religion
29%
Catholic
16%
Mormon
3%
Eastern Orthodox
1%
Jewish
1%
Muslim
1%
Buddhist
1%
Other
4%

Major religious affiliations of the people of Colorado as of 2014 were 64% Christian, of whom there are 44% Protestant, 16% Roman Catholic, 3% Mormon, and 1% Eastern Orthodox.[125] Other religious breakdowns according to the Pew Research Center were 1% Jewish, 1% Muslim, 1% Buddhist and 4% other. The religiously unaffiliated made up 29% of the population.[126] In 2020, according to the Public Religion Research Institute, Christianity was 66% of the population. Judaism was also reported to have increased in this separate study, forming 2% of the religious landscape, while the religiously unaffiliated were reported to form 28% of the population at this separate study.[127]

The largest denominations by number of adherents in 2010 were the Catholic Church with 811,630; multi-denominational Evangelical Protestants with 229,981; and the Church of Jesus Christ of Latter-day Saints with 151,433.[128]

Our Lady of Guadalupe Catholic Church was the first permanent Catholic parish in modern-day Colorado and was constructed by Spanish colonists from New Mexico in modern-day Conejos.[129] Latin Church Catholics are served by three dioceses: the Archdiocese of Denver and the Dioceses of Colorado Springs and Pueblo.

The first permanent settlement by members of the Church of Jesus Christ of Latter-day Saints in Colorado arrived from Mississippi and initially camped along the Arkansas River just east of the present-day site of Pueblo.[130]

Health

Colorado is generally considered among the healthiest states by behavioral and healthcare researchers. Among the positive contributing factors is the state's well-known outdoor recreation opportunities and initiatives.[131] However, there is a stratification of health metrics with wealthier counties such as Douglas and Pitkin performing significantly better relative to southern, less wealthy counties such as Huerfano and Las Animas.[132]

Obesity

According to several studies, Coloradans have the lowest rates of obesity of any state in the US.[133] As of 2018, 24% of the population was considered medically obese, and while the lowest in the nation, the percentage had increased from 17% in 2004.[134][135]

Life expectancy

According to a report in the Journal of the American Medical Association, residents of Colorado had a 2014 life expectancy of 80.21 years, the longest of any U.S. state.[136]

Economy

 
Denver Energy Center lies in the Denver financial district along 17th Street, known as the Wall Street of the West
 
Corn growing in Larimer County
  • Total employment (2019): 2,473,192
  • Number of employer establishments: 174,258[137]

The total state product in 2015 was $318.6 billion.[138] Median Annual Household Income in 2016 was $70,666, 8th in the nation.[139] Per capita personal income in 2010 was $51,940, ranking Colorado 11th in the nation.[140] The state's economy broadened from its mid-19th-century roots in mining when irrigated agriculture developed, and by the late 19th century, raising livestock had become important. Early industry was based on the extraction and processing of minerals and agricultural products. Current agricultural products are cattle, wheat, dairy products, corn, and hay.

The federal government operates several federal facilities in the state, including NORAD (North American Aerospace Defense Command), United States Air Force Academy, Schriever Air Force Base located approximately 10 miles (16 kilometers) east of Peterson Air Force Base, and Fort Carson, both located in Colorado Springs within El Paso County; NOAA, the National Renewable Energy Laboratory (NREL) in Golden, and the National Institute of Standards and Technology in Boulder; U.S. Geological Survey and other government agencies at the Denver Federal Center near Lakewood; the Denver Mint, Buckley Space Force Base, the Tenth Circuit Court of Appeals, and the Byron G. Rogers Federal Building and United States Courthouse in Denver; and a federal Supermax Prison and other federal prisons near Cañon City. In addition to these and other federal agencies, Colorado has abundant National Forest land and four National Parks that contribute to federal ownership of 24,615,788 acres (99,617 km2) of land in Colorado, or 37% of the total area of the state.[141] In the second half of the 20th century, the industrial and service sectors expanded greatly. The state's economy is diversified and is notable for its concentration on scientific research and high-technology industries. Other industries include food processing, transportation equipment, machinery, chemical products, the extraction of metals such as gold (see Gold mining in Colorado), silver, and molybdenum. Colorado now also has the largest annual production of beer in any state.[142] Denver is an important financial center.

The state's diverse geography and majestic mountains attract millions of tourists every year, including 85.2 million in 2018. Tourism contributes greatly to Colorado's economy, with tourists generating $22.3 billion in 2018.[143]

Several nationally known brand names have originated in Colorado factories and laboratories. From Denver came the forerunner of telecommunications giant Qwest in 1879, Samsonite luggage in 1910, Gates belts and hoses in 1911, and Russell Stover Candies in 1923. Kuner canned vegetables began in Brighton in 1864. From Golden came Coors beer in 1873, CoorsTek industrial ceramics in 1920, and Jolly Rancher candy in 1949. CF&I railroad rails, wire, nails, and pipe debuted in Pueblo in 1892. Holly Sugar was first milled from beets in Holly in 1905, and later moved its headquarters to Colorado Springs. The present-day Swift packed meat of Greeley evolved from Monfort of Colorado, Inc., established in 1930. Estes model rockets were launched in Penrose in 1958. Fort Collins has been the home of Woodward Governor Company's motor controllers (governors) since 1870, and Waterpik dental water jets and showerheads since 1962. Celestial Seasonings herbal teas have been made in Boulder since 1969. Rocky Mountain Chocolate Factory made its first candy in Durango in 1981.

Colorado has a flat 4.63% income tax, regardless of income level. On November 3, 2020, voters authorized an initiative to lower that income tax rate to 4.55 percent. Unlike most states, which calculate taxes based on federal adjusted gross income, Colorado taxes are based on taxable income—income after federal exemptions and federal itemized (or standard) deductions.[144][145] Colorado's state sales tax is 2.9% on retail sales. When state revenues exceed state constitutional limits, according to Colorado's Taxpayer Bill of Rights legislation, full-year Colorado residents can claim a sales tax refund on their individual state income tax return. Many counties and cities charge their own rates, in addition to the base state rate. There are also certain county and special district taxes that may apply.

Real estate and personal business property are taxable in Colorado. The state's senior property tax exemption was temporarily suspended by the Colorado Legislature in 2003. The tax break was scheduled to return for the assessment year 2006, payable in 2007.

As of December 2018, the state's unemployment rate was 4.2%.[146]

The West Virginia teachers' strike in 2018 inspired teachers in other states, including Colorado, to take similar action.[147]

Agriculture

Corn in grown in the Eastern Plains of Colorado. Arid conditions and drought negatively impacted yields in 2020[148] and 2022.[149]

Natural resources

 
An oil well in western Colorado

Colorado has significant hydrocarbon resources. According to the Energy Information Administration, Colorado hosts seven of the largest natural gas fields in the United States, and two of the largest oil fields. Conventional and unconventional natural gas output from several Colorado basins typically account for more than five percent of annual U.S. natural gas production. Colorado's oil shale deposits hold an estimated 1 trillion barrels (160 km3) of oil—nearly as much oil as the entire world's proven oil reserves.[150] Substantial deposits of bituminous, subbituminous, and lignite coal are found in the state.

Uranium mining in Colorado goes back to 1872, when pitchblende ore was taken from gold mines near Central City, Colorado. Not counting byproduct uranium from phosphate, Colorado is considered to have the third-largest uranium reserves of any U.S. state, behind Wyoming and New Mexico. When Colorado and Utah dominated radium mining from 1910 to 1922, uranium and vanadium were the byproducts (giving towns like present-day Superfund site Uravan their names).[151] Uranium price increases from 2001 to 2007 prompted several companies to revive uranium mining in Colorado. During the 1940s, certain communities–including Naturita and Paradox–earned the moniker of "yellowcake towns" from their relationship with uranium mining. Price drops and financing problems in late 2008 forced these companies to cancel or scale back the uranium-mining project. As of 2016, there were no major uranium mining operations in the state, though plans existed to restart production.[152]

Electricity generation

Colorado's high Rocky Mountain ridges and eastern plains offer wind power potential, and geologic activity in the mountain areas provides potential for geothermal power development. Much of the state is sunny and could produce solar power. Major rivers flowing from the Rocky Mountains offer hydroelectric power resources.

Culture

 
Street art in Denver

Arts and film

A number of film productions have shot on location in Colorado, especially prominent Westerns like True Grit, The Searchers, and Butch Cassidy and the Sundance Kid. Several historic military forts, railways with trains still operating, and mining ghost towns have been used and transformed for historical accuracy in well-known films. There are also several scenic highways and mountain passes that helped to feature the open road in films such as Vanishing Point, Bingo and Starman. Some Colorado landmarks have been featured in films, such as The Stanley Hotel in Dumb and Dumber and The Shining and the Sculptured House in Sleeper. In 2015, Furious 7 was to film driving sequences on Pikes Peak Highway in Colorado. The TV series Good Luck Charlie was set, but not filmed, in Denver, Colorado. The Colorado Office of Film and Television has noted that more than 400 films have been shot in Colorado.[153]

There are also a number of established film festivals in Colorado, including Aspen Shortsfest, Boulder International Film Festival, Castle Rock Film Festival, Denver Film Festival, Festivus Film Festival, Mile High Horror Film Festival, Moondance International Film Festival, Mountainfilm in Telluride, Rocky Mountain Women's Film Festival, and Telluride Film Festival.

Many notable writers have lived or spent extended periods of time in Colorado. Beat Generation writers Jack Kerouac and Neal Cassady lived in and around Denver for several years each.[154] Irish playwright Oscar Wilde visited Colorado on his tour of the United States in 1882, writing in his 1906 Impressions of America that Leadville was "the richest city in the world. It has also got the reputation of being the roughest, and every man carries a revolver."[155][156]

Cuisine

Colorado is known for its Southwest and Rocky Mountain cuisine, with Mexican restaurants found throughout the state.

Boulder was named America's Foodiest Town 2010 by Bon Appétit.[157] Boulder, and Colorado in general, is home to a number of national food and beverage companies, top-tier restaurants and farmers' markets. Boulder also has more Master Sommeliers per capita than any other city, including San Francisco and New York.[158] Denver is known for steak, but now has a diverse culinary scene with many restaurants.[159]

Polidori Sausage is a brand of pork products available in supermarkets, which originated in Colorado, in the early 20th century.[160]

The Food & Wine Classic is held annually each June in Aspen. Aspen also has a reputation as the culinary capital of the Rocky Mountain region.[161]

Wine and beer

Colorado wines include award-winning varietals that have attracted favorable notice from outside the state.[162] With wines made from traditional Vitis vinifera grapes along with wines made from cherries, peaches, plums and honey, Colorado wines have won top national and international awards for their quality.[163] Colorado's grape growing regions contain the highest elevation vineyards in the United States,[164] with most viticulture in the state practiced between 4,000 and 7,000 feet (1,219 and 2,134 m) above sea level. The mountain climate ensures warm summer days and cool nights. Colorado is home to two designated American Viticultural Areas of the Grand Valley AVA and the West Elks AVA,[165] where most of the vineyards in the state are located. However, an increasing number of wineries are located along the Front Range.[166] In 2018, Wine Enthusiast Magazine named Colorado's Grand Valley AVA in Mesa County, Colorado, as one of the Top Ten wine travel destinations in the world.[167]

Colorado is home to many nationally praised microbreweries,[168] including New Belgium Brewing Company, Odell Brewing Company, Great Divide Brewing Company, and Bristol Brewing Company. The area of northern Colorado near and between the cities of Denver, Boulder, and Fort Collins is known as the "Napa Valley of Beer" due to its high density of craft breweries.[169]

Marijuana and hemp

Colorado is open to cannabis (marijuana) tourism.[170] With the adoption of the 64th state amendment in 2012, Colorado became the first state in the union to legalize marijuana for medicinal (2000), industrial (referring to hemp, 2012), and recreational (2012) use. Colorado's marijuana industry sold $1.31 billion worth of marijuana in 2016 and $1.26 billion in the first three-quarters of 2017.[171] The state generated tax, fee, and license revenue of $194 million in 2016 on legal marijuana sales.[172] Colorado regulates hemp as any part of the plant with less than 0.3% THC.[173]

On April 4, 2014, Senate Bill 14–184 addressing oversight of Colorado's industrial hemp program was first introduced, ultimately being signed into law by Governor John Hickenlooper on May 31, 2014.[174]

Medicinal use

On November 7, 2000, 54% of Colorado voters passed Amendment 20, which amends the Colorado State constitution to allow the medical use of marijuana.[175] A patient's medical use of marijuana, within the following limits, is lawful:

  • (I) No more than 2 ounces (57 g) of a usable form of marijuana; and
  • (II) No more than twelve marijuana plants, with six or fewer being mature, flowering plants that are producing a usable form of marijuana.[176]

Currently Colorado has listed "eight medical conditions for which patients can use marijuana—cancer, glaucoma, HIV/AIDS, muscle spasms, seizures, severe pain, severe nausea and cachexia, or dramatic weight loss and muscle atrophy".[177] While governor, John Hickenlooper allocated about half of the state's $13 million "Medical Marijuana Program Cash Fund"[178] to medical research in the 2014 budget.[179] By 2018, the Medical Marijuana Program Cash Fund was the "largest pool of pot money in the state" and was used to fund programs including research into pediatric applications for controlling autism symptoms.[180]

Recreational use

On November 6, 2012, voters amended the state constitution to protect "personal use" of marijuana for adults, establishing a framework to regulate marijuana in a manner similar to alcohol.[181] The first recreational marijuana shops in Colorado, and by extension the United States, opened their doors on January 1, 2014.[182]

Sports

 
The Colorado Rockies baseball club at Coors Field
 
Empower Field at Mile High in Denver, home field of the Denver Broncos and the Denver Outlaws

Colorado has five major professional sports leagues, all based in the Denver metropolitan area. Colorado is the least populous state with a franchise in each of the major professional sports leagues.

The Colorado Springs Snow Sox professional baseball team is based in Colorado Springs. The team is a member of the Pecos League, an independent baseball league which is not affiliated with Major or Minor League Baseball.[183][184]

The Pikes Peak International Hill Climb is a major hill climbing motor race held on the Pikes Peak Highway.

The Cherry Hills Country Club has hosted several professional golf tournaments, including the U.S. Open, U.S. Senior Open, U.S. Women's Open, PGA Championship and BMW Championship.

Professional sports teams

Team Home First game Sport League
Colorado Avalanche Denver October 6, 1995 Ice hockey National Hockey League
Colorado Eagles Loveland October 17, 2003 Ice hockey American Hockey League
Colorado Mammoth Denver January 3, 2003 Lacrosse National Lacrosse League
Colorado Rapids Commerce City April 13, 1996 Soccer Major League Soccer
Colorado Rapids 2 Denver March 27, 2022 Soccer MLS Next Pro
Colorado Rockies Denver April 5, 1993 Baseball Major League Baseball
Colorado Springs Switchbacks FC Colorado Springs March 28, 2015 Soccer USL Championship
Denver Barbarians Denver Spring 1967 Rugby union Pacific Rugby Premiership
Denver Broncos Denver September 9, 1960 American football National Football League
Denver Nuggets Denver September 27, 1967 Basketball National Basketball Association
Glendale Raptors Glendale Fall 2006 Rugby union Major League Rugby
Grand Junction Rockies Grand Junction June 18, 2012 Baseball Pioneer League
Northern Colorado Hailstorm FC Windsor April 6, 2022 Soccer USL League One
Northern Colorado Owlz Windsor May 25, 2022 Baseball Pioneer League
Rocky Mountain Vibes Colorado Springs June 2019 Baseball Pioneer League

College athletics

 
Weidner Field in Colorado Springs, home of the Colorado Springs Switchbacks FC

The following universities and colleges participate in the National Collegiate Athletic Association Division I. The most popular college sports program is the University of Colorado Buffaloes, who used to play in the Big-12 but now play in the Pac-12. They have won the 1957 and 1991 Orange Bowl, 1995 Fiesta Bowl, and 1996 Cotton Bowl Classic.

Transportation

 
A Colorado state welcome sign

Colorado's primary mode of transportation (in terms of passengers) is its highway system. Interstate 25 (I-25) is the primary north-south highway in the state, connecting Pueblo, Colorado Springs, Denver, and Fort Collins, and extending north to Wyoming and south to New Mexico. I-70 is the primary east-west corridor. It connects Grand Junction and the mountain communities with Denver and enters Utah and Kansas. The state is home to a network of US and Colorado highways that provide access to all principal areas of the state. Many smaller communities are connected to this network only via county roads.

 
The main terminal of Denver International Airport evokes the peaks of the Front Range.

Denver International Airport (DIA) is the third-busiest domestic U.S. and international airport in the world by passenger traffic.[185] DIA handles by far the largest volume of commercial air traffic in Colorado and is the busiest U.S. hub airport between Chicago and the Pacific coast, making Denver the most important airport for connecting passenger traffic in the western United States.

Public transportation bus services are offered both intra-city and inter-city—including the Denver metro area's RTD services. The Regional Transportation District (RTD) operates the popular RTD Bus & Rail transit system in the Denver Metropolitan Area. As of January 2013 the RTD rail system had 170 light-rail vehicles, serving 47 miles (76 km) of track. In addition to local public transit, intercity bus service is provided by Burlington Trailways, Bustang, Express Arrow, and Greyhound Lines.

 
The westbound and eastbound California Zephyrs meet in the Glenwood Canyon.

Amtrak operates two passenger rail lines in Colorado, the California Zephyr and Southwest Chief. Colorado's contribution to world railroad history was forged principally by the Denver and Rio Grande Western Railroad which began in 1870 and wrote the book on mountain railroading. In 1988 the "Rio Grande" was acquired, but was merged into, the Southern Pacific Railroad by their joint owner Philip Anschutz. On September 11, 1996, Anschutz sold the combined company to the Union Pacific Railroad, creating the largest railroad network in the United States. The Anschutz sale was partly in response to the earlier merger of Burlington Northern and Santa Fe which formed the large Burlington Northern and Santa Fe Railway (BNSF), Union Pacific's principal competitor in western U.S. railroading. Both Union Pacific and BNSF have extensive freight operations in Colorado.

Colorado's freight railroad network consists of 2,688 miles of Class I trackage. It is integral to the U.S. economy, being a critical artery for the movement of energy, agriculture, mining, and industrial commodities as well as general freight and manufactured products between the East and Midwest and the Pacific coast states.[186]

In August 2014, Colorado began to issue driver licenses to aliens not lawfully in the United States who lived in Colorado.[187] In September 2014, KCNC reported that 524 non-citizens were issued Colorado driver licenses that are normally issued to U.S. citizens living in Colorado.[188]

Education

The first institution of higher education in the Colorado Territory was the Colorado Seminary, opened on November 16, 1864, by the Methodist Episcopal Church. The seminary closed in 1867, but reopened in 1880 as the University of Denver. In 1870, the Bishop George Maxwell Randall of the Episcopal Missionary District of Colorado and Parts Adjacent opened the first of what become the Colorado University Schools which would include the Territorial School of Mines opened in 1873 and sold to the Colorado Territory in 1874. These schools were initially run by the Episcopal Church.[189] An 1861 territorial act called for the creation of a public university in Boulder, though it would not be until 1876 that the University of Colorado was founded.[190] The 1876 act also renamed Territorial School of Mines as the Colorado School of Mines.[191] An 1870 territorial act created the Agricultural College of Colorado which opened in 1879.[192] The college was renamed the Colorado State College of Agriculture and Mechanic Arts in 1935, and became Colorado State University in 1957.

The first Catholic college in Colorado was the Jesuit Sacred Heart College, which was founded in New Mexico in 1877, moved to Morrison in 1884, and to Denver in 1887. The college was renamed Regis College in 1921 and Regis University in 1991.[193] On April 1, 1924, armed students patrolled the campus after a burning cross was found, the climax of tensions between Regis College and the locally-powerful Ku Klux Klan.[194]

Following a 1950 assessment by the Service Academy Board, it was determined that there was a need to supplement the U.S. Military and Naval Academies with a third school that would provide commissioned officers for the newly independent Air Force. On April 1, 1954, President Dwight Eisenhower signed a law that moved for the creation of a U.S. Air Force Academy.[195] Later that year, Colorado Springs was selected to host the new institution. From its establishment in 1955 until the construction of appropriate facilities in Colorado Springs was completed and opened in 1958, the Air Force Academy operated out of Lowry Air Force Base in Denver. With the opening of the Colorado Springs facility, the cadets moved to the new campus, though not in the full-kit march that some urban and campus legends suggest.[196] The first class of Space Force officers from the Air Force Academy commissioned on April 18, 2020.[197]

Military installations

The major military installations in Colorado include:

Former military posts in Colorado include:

Government

State government

State Executive Officers
Office Name Party
Governor Jared Polis Democratic
Lieutenant Governor Dianne Primavera Democratic
Secretary of State Jena Griswold Democratic
Attorney General Phil Weiser Democratic
Treasurer Dave Young Democratic

Like the federal government and all other U.S. states, Colorado's state constitution provides for three branches of government: the legislative, the executive, and the judicial branches.

The Governor of Colorado heads the state's executive branch. The current governor is Jared Polis, a Democrat. Colorado's other statewide elected executive officers are the Lieutenant Governor of Colorado (elected on a ticket with the Governor), Secretary of State of Colorado, Colorado State Treasurer, and Attorney General of Colorado, all of whom serve four-year terms.

The seven-member Colorado Supreme Court is the state's highest court, with seven justices. The Colorado Court of Appeals, with 22 judges, sits in divisions of three judges each. Colorado is divided into 22 judicial districts, each of which has a district court and a county court with limited jurisdiction. The state also has specialized water courts, which sit in seven distinct divisions around the state and which decide matters relating to water rights and the use and administration of water.

The state legislative body is the Colorado General Assembly, which is made up of two houses – the House of Representatives and the Senate. The House has 65 members and the Senate has 35. As of 2021, the Democratic Party holds a 20 to 15 majority in the Senate and a 41 to 24 majority in the House.

Most Coloradans are native to other states (nearly 60% according to the 2000 census),[199] and this is illustrated by the fact that the state did not have a native-born governor from 1975 (when John David Vanderhoof left office) until 2007, when Bill Ritter took office; his election the previous year marked the first electoral victory for a native-born Coloradan in a gubernatorial race since 1958 (Vanderhoof had ascended from the Lieutenant Governorship when John Arthur Love was given a position in Richard Nixon's administration in 1973).

Tax is collected by the Colorado Department of Revenue.

Politics

Colorado registered voters as of August 1, 2022[200]
Party Number of Voters Percentage
Unaffiliated 1,658,017 44.92%
Democratic 1,034,542 28.03%
Republican 931,184 25.23%
Libertarian 40,242 1.09%
American Constitution 11,689 0.32%
Green 8,385 0.23%
Approval Voting 4,186 0.11%
Unity 3,156 0.08%
Total 3,691,041 100%
United States presidential election results for Colorado[201]
Year Republican Democratic Third party
No.  % No.  % No.  %
2020 1,364,607 41.90% 1,804,352 55.40% 88,021 2.70%
2016 1,202,484 43.25% 1,338,870 48.16% 238,893 8.59%
2012 1,185,243 46.09% 1,323,102 51.45% 63,501 2.47%
2008 1,073,629 44.71% 1,288,633 53.66% 39,200 1.63%
2004 1,101,256 51.69% 1,001,725 47.02% 27,344 1.28%
2000 883,745 50.75% 738,227 42.39% 119,393 6.86%
1996 691,848 45.80% 671,152 44.43% 147,704 9.78%
1992 562,850 35.87% 629,681 40.13% 376,649 24.00%
1988 728,177 53.06% 621,453 45.28% 22,764 1.66%
1984 821,818 63.44% 454,974 35.12% 18,589 1.44%
1980 652,264 55.07% 367,973 31.07% 164,178 13.86%
1976 584,367 54.05% 460,353 42.58% 36,415 3.37%
1972 597,189 62.61% 329,980 34.59% 26,715 2.80%
1968 409,345 50.46% 335,174 41.32% 66,680 8.22%
1964 296,767 38.19% 476,024 61.27% 4,195 0.54%
1960 402,242 54.63% 330,629 44.91% 3,375 0.46%
1956 394,479 59.49% 263,997 39.81% 4,598 0.69%
1952 379,782 60.27% 245,504 38.96% 4,817 0.76%
1948 239,714 46.52% 267,288 51.88% 8,235 1.60%
1944 268,731 53.21% 234,331 46.40% 1,977 0.39%
1940 279,576 50.92% 265,554 48.37% 3,874 0.71%
1936 181,267 37.09% 295,021 60.37% 12,396 2.54%
1932 189,617 41.43% 250,877 54.81% 17,202 3.76%
1928 253,872 64.72% 133,131 33.94% 5,239 1.34%
1924 195,171 57.02% 75,238 21.98% 71,851 20.99%
1920 173,248 59.32% 104,936 35.93% 13,869 4.75%
1916 102,308 34.75% 178,816 60.74% 13,251 4.50%
1912 58,386 21.88% 114,232 42.80% 94,262 35.32%
1908 123,693 46.88% 126,644 48.00% 13,521 5.12%
1904 134,661 55.26% 100,105 41.08% 8,901 3.65%
1900 93,072 42.04% 122,733 55.43% 5,603 2.53%
1896 26,271 13.86% 161,005 84.95% 2,263 1.19%
1892 38,620 41.13% 0 0.00% 55,271 58.87%
1888 50,772 55.22% 37,549 40.84% 3,625 3.94%
1884 36,084 54.25% 27,723 41.68% 2,712 4.08%
1880 27,450 51.26% 24,647 46.03% 1,449 2.71%

Colorado was once considered a swing state, but has become a relatively safe blue state in both state and federal elections. In presidential elections, it had not been won until 2020 by double digits since 1984, and has backed the winning candidate in 9 of the last 11 elections. Coloradans have elected 17 Democrats and 12 Republicans to the governorship in the last 100 years.

In presidential politics, Colorado was considered a reliably Republican state during the post-World War II era, voting for the Democratic candidate only in 1948, 1964, and 1992. However, it became a competitive swing state in the 1990s. Since the mid-2000s, it has swung heavily to the Democrats, voting for Barack Obama in 2008 and 2012, Hillary Clinton in 2016, and Joe Biden in 2020.

Colorado politics has the contrast between conservative cities such as Colorado Springs and Grand Junction and liberal cities such as Boulder and Denver. Democrats are strongest in metropolitan Denver, the college towns of Fort Collins and Boulder, southern Colorado (including Pueblo), and several western ski resort counties. The Republicans are strongest in the Eastern Plains, Colorado Springs, Greeley, and far Western Colorado near Grand Junction.

Colorado is represented by two United States Senators:

Colorado is represented by seven Representatives to the United States House of Representatives:

In a 2020 study, Colorado was ranked as the 7th easiest state for citizens to vote in.[202]

Significant initiatives and legislation enacted in Colorado

In 1881 Colorado voters approved a referendum that selected Denver as the state capital.

Colorado was the first state in the union to enact, by voter referendum, a law extending suffrage to women. That initiative was approved by the state's voters on November 7, 1893.[203]

On the November 8, 1932, ballot, Colorado approved the repeal of alcohol prohibition more than a year before the Twenty-first Amendment to the United States Constitution was ratified.

Colorado has banned, via C.R.S. section 12-6-302, the sale of motor vehicles on Sunday since at least 1953.[204]

In 1972 Colorado voters rejected a referendum proposal to fund the 1976 Winter Olympics, which had been scheduled to be held in the state. Denver had been chosen by the International Olympic Committee as host city on May 12, 1970.[205]

In 1992, by a margin of 53 to 47 percent, Colorado voters approved an amendment to the state constitution (Amendment 2) that would have prevented any city, town, or county in the state from taking any legislative, executive, or judicial action to recognize homosexuals or bisexuals as a protected class.[206] In 1996, in a 6–3 ruling in Romer v. Evans, the U.S. Supreme Court found that preventing protected status based upon homosexuality or bisexuality did not satisfy the Equal Protection Clause.[207]

In 2006, voters passed Amendment 43, which banned gay marriage in Colorado.[208] That initiative was nullified by the U.S. Supreme Court's 2015 decision in Obergefell v. Hodges.

In 2012, voters amended the state constitution protecting the "personal use" of marijuana for adults, establishing a framework to regulate cannabis like alcohol. The first recreational marijuana shops in Colorado, and by extension the United States, opened their doors on January 1, 2014.[182]

On May 29, 2019, Governor Jared Polis signed House Bill 1124 immediately prohibiting law enforcement officials in Colorado from holding undocumented immigrants solely based on a request from U.S. Immigration and Customs Enforcement.[209]

Native American reservations

The two Native American reservations remaining in Colorado are:

The two abolished Indian reservations in Colorado were:

Protected areas

 
Spruce Tree House in Mesa Verde National Park

Colorado is home to 4 national parks, 9 national monuments, 3 national historic sites, 2 national recreation areas, 4 national historic trails, 1 national scenic trail, 11 national forests, 2 national grasslands, 44 national wildernesses, 3 national conservation areas, 8 national wildlife refuges, 3 national heritage areas, 26 national historic landmarks, 16 national natural landmarks, more than 1,500 National Register of Historic Places, 1 wild and scenic river, 42 state parks, 307 state wildlife areas, 93 state natural areas, 28 national recreation trails, 6 regional trails, and numerous other scenic, historic, and recreational areas.

The following are the 23 units of the National Park System in Colorado:

See also

Footnotes

  1. ^ Early explorers identified the Gunnison River in Colorado as the headwaters of the Colorado River. The Grand River in Colorado was later tentatively identified as the primary headwaters of the river. In 1916, E.C. LaRue, the Chief Hydrologist of the United States Geological Survey, identified the Green River in southwestern Wyoming as the primary headwaters of the Colorado River.
  2. ^ a b c United States Census Bureau estimates of county population as of July 1, 2021[94]
  3. ^ As a consolidated city and county, the City and County of Denver is its own county seat.[95]
  4. ^ As a consolidated city and county, the City and County of Broomfield is its own county seat.[95]
  5. ^ a b c United States Census Bureau estimates of municipal population as of July 1, 2021[97]
  6. ^ Persons of Hispanic or Latino origin are not distinguished between total and partial ancestry.
  7. ^ Several Air Force teams participate in other conferences, or as independents, in sports that the MW does not sponsor:
  8. ^ Several Colorado teams participate in other conferences in sports that the Pac-12 does not sponsor:
  9. ^ Several Denver teams participate in other conferences in sports that The Summit League does not sponsor:
  10. ^ Several Northern Colorado teams participate in other conferences in sports that the Big Sky does not sponsor:
  11. ^ Colorado College, otherwise an NCAA Division III member, has two Division I teams. Men's ice hockey competes in the National Collegiate Hockey Conference and women's soccer competes in the Mountain West.
  12. ^ a b c Arapaho National Recreation Area, Camp Hale-Continental Divide National Monument, and Chimney Rock National Monument are managed by the United States Forest Service, United States Department of Agriculture.
  13. ^ Browns Canyon National Monument is jointly managed by the Bureau of Land Management, United States Department of the Interior, and the United States Forest Service, United States Department of Agriculture.
  14. ^ The California National Historic Trail traverses ten U.S. states: Missouri, Kansas, Nebraska, Colorado, Wyoming, Idaho, Utah, Nevada, Oregon, and California.
  15. ^ Canyons of the Ancients National Monument is managed by the Bureau of Land Management, United States Department of the Interior.
  16. ^ The Continental Divide National Scenic Trail traverses five U.S. states: Montana, Idaho, Wyoming, Colorado, and New Mexico.
  17. ^ The Continental Divide National Scenic Trail is jointly managed by the United States Forest Service, United States Department of Agriculture, and the National Park Service and Bureau of Land Management, United States Department of the Interior.
  18. ^ Dinosaur National Monument extends into the State of Utah.
  19. ^ Hovenweep National Monument extends into the State of Utah.
  20. ^ The Old Spanish National Historic Trail traverses six U.S. states: New Mexico, Colorado, Utah, Arizona, Nevada, and California.
  21. ^ The Pony Express National Historic Trail traverses eight U.S. states: Missouri, Kansas, Nebraska, Colorado, Wyoming, Utah, Nevada, and California.
  22. ^ The Santa Fe National Historic Trail traverses five U.S. states: Missouri, Kansas, Colorado, Oklahoma, and New Mexico.
  23. ^ Yucca House National Monument remains undeveloped.

References

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colorado, river, river, physiographic, region, plateau, other, uses, disambiguation, ɑː, listen, other, variants, state, mountain, west, subregion, western, united, states, encompasses, most, southern, rocky, mountains, well, northeastern, portion, plateau, we. For the river see Colorado River For the physiographic region see Colorado Plateau For other uses see Colorado disambiguation Colorado ˌ k ɒ l e ˈ r ae d oʊ ˈ r ɑː d oʊ listen other variants 7 8 9 is a state in the Mountain West subregion of the Western United States It encompasses most of the Southern Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains Colorado is the eighth most extensive and 21st most populous U S state The 2020 United States census enumerated the population of Colorado at 5 773 714 an increase of 14 80 since the 2010 United States census 10 ColoradoStateState of ColoradoFlagSealNicknames The Centennial StateMotto s Nil sine numine English Nothing without providence Anthem Where the Columbines Grow and Rocky Mountain High 1 Map of the United States with Colorado highlightedCountryUnited StatesAdmitted to the UnionAugust 1 1876 2 38th Capital and largest city DenverLargest metro and urban areasDenverGovernment GovernorJared Polis D Lieutenant GovernorDianne Primavera D LegislatureGeneral Assembly Upper houseSenate D 23 R 12 Lower houseHouse of Representatives D 46 R 19JudiciaryColorado Supreme CourtU S senatorsMichael Bennet D John Hickenlooper D U S House delegation5 Democrats3 Republicans list Area Total104 094 sq mi 269 837 km2 Land103 718 sq mi 268 875 km2 Water376 sq mi 962 km2 0 36 Rank8thDimensions Length380 mi 610 km Width280 mi 450 km Elevation6 800 ft 2 070 m Highest elevation Mount Elbert 3 4 5 14 440 ft 4 401 2 m Lowest elevation Arikaree River 4 5 3 317 ft 1 011 m Population 2020 Total5 773 714 Rank21st Density55 47 sq mi 21 40 km2 Rank37th Median household income 75 200 6 Income rank9thDemonymColoradanLanguage Official languageEnglishTime zoneUTC 07 00 MST Summer DST UTC 06 00 MDT USPS abbreviationCOISO 3166 codeUS COLatitude37 N to 41 NLongitude102 02 48 W to 109 02 48 WWebsitewww wbr colorado wbr govColorado state symbolsFlag of ColoradoLiving insigniaAmphibianWestern tiger salamanderAmbystoma mavortiumBirdLark buntingCalamospiza melanocoryusCactusClaret cup cactusEchinocereus triglochidiatusFishGreenback cutthroat troutOncorhynchus clarki somiasFlowerRocky Mountain columbineAquilegia coeruleaGrassBlue grama grassBouteloua gracilisInsectColorado HairstreakHypaurotis crysalusMammalRocky Mountain bighorn sheepOvis canadensisPetColorado shelter petsCanis lupus familiarisand Felis catusReptileWestern painted turtleChrysemys picta belliiTreeColorado blue sprucePicea pungensInanimate insigniaColorsBlue red yellow whiteDinosaurStegosaurusFolk danceSquare danceChorea quadraFossilStegosaurusStegosaurus armatusGemstoneAquamarineMineralRhodochrositeRockYule MarbleShipUSS Colorado SSN 788 SloganColorful ColoradoSoilSeitzSportPack burro racingTartanColorado state tartanState route markerLists of United States state symbolsThe region has been inhabited by Native Americans and their ancestors for at least 13 500 years and possibly much longer The eastern edge of the Rocky Mountains was a major migration route for early peoples who spread throughout the Americas Colorado is the Spanish adjective meaning ruddy the color of the Fountain Formation outcroppings found up and down the Front Range of the Rocky Mountains 11 The Territory of Colorado was organized on February 28 1861 12 and on August 1 1876 U S President Ulysses S Grant signed Proclamation 230 admitting Colorado to the Union as the 38th state 2 Colorado is nicknamed the Centennial State because it became a state one century after the signing of the United States Declaration of Independence Colorado is bordered by Wyoming to the north Nebraska to the northeast Kansas to the east Oklahoma to the southeast New Mexico to the south and Utah to the west and touches Arizona to the southwest at the Four Corners Colorado is noted for its vivid landscape of mountains forests high plains mesas canyons plateaus rivers and desert lands Colorado is one of the Mountain States and is a part of the western and southwestern United States Denver is the capital of and most populous city in Colorado Residents of the state are known as Coloradans although the antiquated Coloradoan is occasionally used 13 14 Major parts of the economy include government and defense mining agriculture tourism and increasingly other kinds of manufacturing With increasing temperatures and decreasing water availability Colorado s agriculture forestry and tourism economies are expected to be heavily affected by climate change 15 Colorado is one of the most educated developed and wealthiest states ranking 3rd in percentage of population 25 and over with a bachelor s degree and 8th in percentage of population 25 and over with an advanced degree 9th on the American Human Development Index 8th in per capita income and 9th in median household income Contents 1 History 1 1 Territory act 1 2 Statehood 1 3 Twentieth and twenty first centuries 2 Geography 2 1 Plains 2 2 Front Range 2 3 Mountains 2 3 1 Continental Divide 2 4 South Central region 2 5 Colorado Western Slope 3 Climate 3 1 Eastern Plains 3 2 Front Range foothills 3 3 Extreme weather 3 4 Climate change 3 5 Records 3 6 Earthquakes 4 Fauna 5 Counties 5 1 Municipalities 5 2 Unincorporated communities 5 3 Special districts 6 Statistical areas 7 Demographics 7 1 Birth data 7 2 Language 7 3 Religion 7 4 Health 7 4 1 Obesity 7 4 2 Life expectancy 8 Economy 8 1 Agriculture 8 2 Natural resources 8 3 Electricity generation 9 Culture 9 1 Arts and film 9 2 Cuisine 9 3 Wine and beer 9 4 Marijuana and hemp 9 4 1 Medicinal use 9 4 2 Recreational use 9 5 Sports 9 5 1 Professional sports teams 9 5 2 College athletics 10 Transportation 11 Education 12 Military installations 13 Government 13 1 State government 13 1 1 Politics 13 1 2 Significant initiatives and legislation enacted in Colorado 14 Native American reservations 15 Protected areas 16 See also 17 Footnotes 18 References 19 Further reading 20 External links 20 1 State government 20 2 Federal government 20 3 OtherHistory EditMain articles Prehistory of Colorado and History of Colorado For a chronological guide see Timeline of Colorado history Ruins of Cliff Palace at Mesa Verde National Park Photo by Gustaf Nordenskiold 1891 Great Kiva at Chimney Rock in the San Juan Mountains of Southwestern Colorado It is said to have been built by the Ancient Pueblo peoples The region that is today the State of Colorado has been inhabited by Native Americans and their Paleoamerican ancestors for at least 13 500 years and possibly more than 37 000 years 16 17 The eastern edge of the Rocky Mountains was a major migration route that was important to the spread of early peoples throughout the Americas The Lindenmeier site in Larimer County contains artifacts dating from approximately 8720 BCE The Ancient Pueblo peoples lived in the valleys and mesas of the Colorado Plateau 18 The Ute Nation inhabited the mountain valleys of the Southern Rocky Mountains and the Western Rocky Mountains even as far east as the Front Range of the present day The Apache and the Comanche also inhabited Eastern and Southeastern parts of the state In the 17th century the Arapaho and Cheyenne moved west from the Great Lakes region to hunt across the High Plains of Colorado and Wyoming The Spanish discovering the Colorado River namesake of the state in 1540 by Augusto Ferrer Dalmau Garcia Lopez de Cardenas can be seen overlooking the Grand Canyon The Spanish Empire claimed Colorado as part of its New Mexico province before U S involvement in the region The U S acquired a territorial claim to the eastern Rocky Mountains with the Louisiana Purchase from France in 1803 This U S claim conflicted with the claim by Spain to the upper Arkansas River Basin as the exclusive trading zone of its colony of Santa Fe de Nuevo Mexico In 1806 Zebulon Pike led a U S Army reconnaissance expedition into the disputed region Colonel Pike and his troops were arrested by Spanish cavalrymen in the San Luis Valley the following February taken to Chihuahua and expelled from Mexico the following July The U S relinquished its claim to all land south and west of the Arkansas River and south of 42nd parallel north and west of the 100th meridian west as part of its purchase of Florida from Spain with the Adams Onis Treaty of 1819 The treaty took effect on February 22 1821 Having settled its border with Spain the U S admitted the southeastern portion of the Territory of Missouri to the Union as the state of Missouri on August 10 1821 The remainder of Missouri Territory including what would become northeastern Colorado became an unorganized territory and remained so for 33 years over the question of slavery After 11 years of war Spain finally recognized the independence of Mexico with the Treaty of Cordoba signed on August 24 1821 Mexico eventually ratified the Adams Onis Treaty in 1831 The Texian Revolt of 1835 36 fomented a dispute between the U S and Mexico which eventually erupted into the Mexican American War in 1846 Mexico surrendered its northern territory to the U S with the Treaty of Guadalupe Hidalgo after the war in 1848 Map of the Mexican Cession with the white representing the territory the United States received from Mexico plus land ceded to the Republic of Texas after the Mexican American War Well over half of Colorado was received during this treaty Most American settlers traveling overland west to the Oregon Country the new goldfields of California or the new Mormon settlements of the State of Deseret in the Salt Lake Valley avoided the rugged Southern Rocky Mountains and instead followed the North Platte River and Sweetwater River to South Pass Wyoming the lowest crossing of the Continental Divide between the Southern Rocky Mountains and the Central Rocky Mountains In 1849 the Mormons of the Salt Lake Valley organized the extralegal State of Deseret claiming the entire Great Basin and all lands drained by the rivers Green Grand and Colorado The federal government of the U S flatly refused to recognize the new Mormon government because it was theocratic and sanctioned plural marriage Instead the Compromise of 1850 divided the Mexican Cession and the northwestern claims of Texas into a new state and two new territories the state of California the Territory of New Mexico and the Territory of Utah On April 9 1851 Mexican American settlers from the area of Taos settled the village of San Luis then in the New Mexico Territory later to become Colorado s first permanent Euro American settlement The Anasazi Heritage Center in Dolores In 1854 Senator Stephen A Douglas persuaded the U S Congress to divide the unorganized territory east of the Continental Divide into two new organized territories the Territory of Kansas and the Territory of Nebraska and an unorganized southern region known as the Indian territory Each new territory was to decide the fate of slavery within its boundaries but this compromise merely served to fuel animosity between free soil and pro slavery factions The gold seekers organized the Provisional Government of the Territory of Jefferson on August 24 1859 but this new territory failed to secure approval from the Congress of the United States embroiled in the debate over slavery The election of Abraham Lincoln for the President of the United States on November 6 1860 led to the secession of nine southern slave states and the threat of civil war among the states Seeking to augment the political power of the Union states the Republican Party dominated Congress quickly admitted the eastern portion of the Territory of Kansas into the Union as the free State of Kansas on January 29 1861 leaving the western portion of the Kansas Territory and its gold mining areas as unorganized territory Territory act Edit Main articles Organic act List of organic acts New Mexico Territory Utah Territory Kansas Nebraska Act Kansas Territory Nebraska Territory Colorado Territory and Pike s Peak Gold Rush The territories of New Mexico Utah Kansas and Nebraska before the creation of the Territory of Colorado Thirty days later on February 28 1861 outgoing U S President James Buchanan signed an Act of Congress organizing the free Territory of Colorado 12 The original boundaries of Colorado remain unchanged except for government survey amendments The name Colorado was chosen because it was commonly believed that the Colorado River originated in the territory a In 1776 Spanish priest Silvestre Velez de Escalante recorded that Native Americans in the area knew the river as el Rio Colorado for the red brown silt that the river carried from the mountains 19 failed verification In 1859 a U S Army topographic expedition led by Captain John Macomb located the confluence of the Green River with the Grand River in what is now Canyonlands National Park in Utah 20 The Macomb party designated the confluence as the source of the Colorado River On April 12 1861 South Carolina artillery opened fire on Fort Sumter to start the American Civil War While many gold seekers held sympathies for the Confederacy the vast majority remained fiercely loyal to the Union cause In 1862 a force of Texas cavalry invaded the Territory of New Mexico and captured Santa Fe on March 10 The object of this Western Campaign was to seize or disrupt the gold fields of Colorado and California and to seize ports on the Pacific Ocean for the Confederacy A hastily organized force of Colorado volunteers force marched from Denver City Colorado Territory to Glorieta Pass New Mexico Territory in an attempt to block the Texans On March 28 the Coloradans and local New Mexico volunteers stopped the Texans at the Battle of Glorieta Pass destroyed their cannon and supply wagons and dispersed 500 of their horses and mules 21 The Texans were forced to retreat to Santa Fe Having lost the supplies for their campaign and finding little support in New Mexico the Texans abandoned Santa Fe and returned to San Antonio in defeat The Confederacy made no further attempts to seize the Southwestern United States Mount of the Holy Cross photographed by William Henry Jackson in 1874 In 1864 Territorial Governor John Evans appointed the Reverend John Chivington as Colonel of the Colorado Volunteers with orders to protect white settlers from Cheyenne and Arapaho warriors who were accused of stealing cattle Colonel Chivington ordered his troops to attack a band of Cheyenne and Arapaho encamped along Sand Creek Chivington reported that his troops killed more than 500 warriors The militia returned to Denver City in triumph but several officers reported that the so called battle was a blatant massacre of Indians at peace that most of the dead were women and children and that bodies of the dead had been hideously mutilated and desecrated Three U S Army inquiries condemned the action and incoming President Andrew Johnson asked Governor Evans for his resignation but none of the perpetrators was ever punished This event is now known as the Sand Creek massacre In the midst and aftermath of the Civil War many discouraged prospectors returned to their homes but a few stayed and developed mines mills farms ranches roads and towns in Colorado Territory On September 14 1864 James Huff discovered silver near Argentine Pass the first of many silver strikes In 1867 the Union Pacific Railroad laid its tracks west to Weir now Julesburg in the northeast corner of the Territory The Union Pacific linked up with the Central Pacific Railroad at Promontory Summit Utah on May 10 1869 to form the First transcontinental railroad The Denver Pacific Railway reached Denver in June the following year and the Kansas Pacific arrived two months later to forge the second line across the continent In 1872 rich veins of silver were discovered in the San Juan Mountains on the Ute Indian reservation in southwestern Colorado The Ute people were removed from the San Juans the following year Statehood Edit Main articles Admission to the Union List of U S states by date of admission to the Union Colorado Silver Boom and Cripple Creek Gold Rush The Georgetown Loop of the Colorado Central Railroad as photographed by William Henry Jackson in 1899 The United States Congress passed an enabling act on March 3 1875 specifying the requirements for the Territory of Colorado to become a state 22 On August 1 1876 four weeks after the Centennial of the United States U S President Ulysses S Grant signed a proclamation admitting Colorado to the Union as the 38th state and earning it the moniker Centennial State 2 The discovery of a major silver lode near Leadville in 1878 triggered the Colorado Silver Boom The Sherman Silver Purchase Act of 1890 invigorated silver mining and Colorado s last but greatest gold strike at Cripple Creek a few months later lured a new generation of gold seekers Colorado women were granted the right to vote on November 7 1893 making Colorado the second state to grant universal suffrage and the first one by a popular vote of Colorado men The repeal of the Sherman Silver Purchase Act in 1893 led to a staggering collapse of the mining and agricultural economy of Colorado but the state slowly and steadily recovered Between the 1880s and 1930s Denver s floriculture industry developed into a major industry in Colorado 23 24 This period became known locally as the Carnation Gold Rush 25 Twentieth and twenty first centuries Edit Poor labor conditions and discontent among miners resulted in several major clashes between strikers and the Colorado National Guard including the 1903 1904 Western Federation of Miners Strike and Colorado Coalfield War the latter of which included the Ludlow massacre that killed a dozen women and children 26 27 Both the 1913 1914 Coalfield War and the Denver streetcar strike of 1920 resulted in federal troops intervening to end the violence 28 In 1927 the Columbine Mine massacre resulted in six dead strikers following a confrontation with Colorado Rangers 29 More than 5 000 Colorado miners many immigrants are estimated to have died in accidents since records were first formally collected following an 1884 accident in Crested Butte that killed 59 30 In 1924 the Ku Klux Klan Colorado Realm achieved dominance in Colorado politics With peak membership levels the Second Klan levied significant control over both the local and state Democrat and Republican parties particularly in the governor s office and city governments of Denver Canon City and Durango A particularly strong element of the Klan controlled the Denver Police 31 Cross burnings became semi regular occurrences in cities such as Florence and Pueblo The Klan targeted African Americans Catholics Eastern European immigrants and other non White Protestant groups 32 Efforts by non Klan lawmen and lawyers including Philip Van Cise lead to a rapid decline in the organization s power with membership waning significantly by the end of the 1920s 31 Three 10th Mountain Division skitroopers above Camp Hale in February 1944 Colorado became the first western state to host a major political convention when the Democratic Party met in Denver in 1908 By the U S census in 1930 the population of Colorado first exceeded one million residents Colorado suffered greatly through the Great Depression and the Dust Bowl of the 1930s but a major wave of immigration following World War II boosted Colorado s fortune Tourism became a mainstay of the state economy and high technology became an important economic engine The United States Census Bureau estimated that the population of Colorado exceeded five million in 2009 On September 11 1957 a plutonium fire occurred at the Rocky Flats Plant which resulted in the significant plutonium contamination of surrounding populated areas 33 From the 1940s and 1970s many protest movements gained momentum in Colorado predominantly in Denver This included the Chicano Movement a civil rights and social movement of Mexican Americans emphasizing a Chicano identity that is widely considered to have begun in Denver 34 The National Chicano Liberation Youth Conference was held in Colorado in March 1969 35 In 1967 Colorado was the first state to loosen restrictions on abortion when governor John Love signed a law allowing abortions in cases of rape incest or threats to the woman s mental or physical health Many states followed Colorado s lead in loosening abortion laws in the 1960s and 1970s 36 Since the late 1990s Colorado has been the site of multiple major mass shootings including the infamous Columbine High School massacre in 1999 which made international news where Eric Harris and Dylan Klebold killed 12 students and one teacher before committing suicide The incident has since spawned many copycat incidents 37 On July 20 2012 a gunman killed 12 people in a movie theater in Aurora The state responded with tighter restrictions on firearms including introducing a limit on magazine capacity 38 On March 22 2021 a gunman killed 10 people including a police officer in a King Soopers supermarket in Boulder 39 Four warships of the U S Navy have been named the USS Colorado The first USS Colorado was named for the Colorado River and served in the Civil War and later the Asiatic Squadron where it was attacked during the 1871 Korean Expedition The later three ships were named in honor of the state the including an armored cruiser and the battleship USS Colorado the latter of which was the lead ship of her class and served in World War II in the Pacific beginning in 1941 At the time of the attack on Pearl Harbor the battleship USS Colorado was located at the naval base in San Diego California and thus went unscathed The most recent vessel to bear the name USS Colorado is Virginia class submarine USS Colorado SSN 788 which was commissioned in 2018 40 Geography EditMain article Geography of Colorado Colorado is notable for its diverse geography which includes alpine mountains high plains deserts with huge sand dunes and deep canyons In 1861 the United States Congress defined the boundaries of the new Territory of Colorado exclusively by lines of latitude and longitude stretching from 37 N to 41 N latitude and from 102 02 48 W to 109 02 48 W longitude 25 W to 32 W from the Washington Meridian 12 After 161 years of government surveys the borders of Colorado were officially defined by 697 boundary markers and 697 straight boundary lines 41 Colorado Wyoming and Utah are the only states that have their borders defined solely by straight boundary lines with no natural features 42 The southwest corner of Colorado is the Four Corners Monument at 36 59 56 N 109 2 43 W 43 44 The Four Corners Monument located at the place where Colorado New Mexico Arizona and Utah meet is the only place in the United States where four states meet 42 Plains Edit The arid high plains in Southeastern Colorado Approximately half of Colorado is flat and rolling land East of the Rocky Mountains are the Colorado Eastern Plains of the High Plains the section of the Great Plains within Nebraska at elevations ranging from roughly 3 350 to 7 500 feet 1 020 to 2 290 m 45 The Colorado plains are mostly prairies but also include deciduous forests buttes and canyons Precipitation averages 15 to 25 inches 380 to 640 mm annually 46 Eastern Colorado is presently mainly farmland and rangeland along with small farming villages and towns Corn wheat hay soybeans and oats are all typical crops Most villages and towns in this region boast both a water tower and a grain elevator Irrigation water is available from both surface and subterranean sources Surface water sources include the South Platte the Arkansas River and a few other streams Subterranean water is generally accessed through artesian wells Heavy usage of these wells for irrigation purposes caused underground water reserves to decline in the region Eastern Colorado also hosts a considerable amount and range of livestock such as cattle ranches and hog farms 47 Front Range Edit Front Range Peaks west of Denver Roughly 70 of Colorado s population resides along the eastern edge of the Rocky Mountains in the Front Range Urban Corridor between Cheyenne Wyoming and Pueblo Colorado This region is partially protected from prevailing storms that blow in from the Pacific Ocean region by the high Rockies in the middle of Colorado The Front Range includes Denver Boulder Fort Collins Loveland Castle Rock Colorado Springs Pueblo Greeley and other townships and municipalities in between On the other side of the Rockies the significant population centers in Western Colorado which is not considered the Front Range are the cities of Grand Junction Durango and Montrose Mountains Edit Map this section s coordinates in List of mountain peaks of Colorado using OpenStreetMap Download coordinates as KMLSee also List of mountain peaks of Colorado Tenmile Range and Dillon Reservoir near Breckenridge To the west of the Great Plains of Colorado rises the eastern slope of the Rocky Mountains Notable peaks of the Rocky Mountains include Longs Peak Mount Evans Pikes Peak and the Spanish Peaks near Walsenburg in southern Colorado This area drains to the east and the southeast ultimately either via the Mississippi River or the Rio Grande into the Gulf of Mexico The Rocky Mountains within Colorado contain 53 true peaks with a total of 58 that are 14 000 feet 4 267 m or higher in elevation above sea level known as fourteeners 48 These mountains are largely covered with trees such as conifers and aspens up to the tree line at an elevation of about 12 000 feet 3 658 m in southern Colorado to about 10 500 feet 3 200 m in northern Colorado Above this tree line only alpine vegetation grows Only small parts of the Colorado Rockies are snow covered year round Much of the alpine snow melts by mid August except for a few snow capped peaks and a few small glaciers The Colorado Mineral Belt stretching from the San Juan Mountains in the southwest to Boulder and Central City on the front range contains most of the historic gold and silver mining districts of Colorado Mount Elbert is the highest summit of the Rocky Mountains The 30 highest major summits of the Rocky Mountains of North America are all within the state The summit of Mount Elbert at 14 440 feet 4 401 2 m elevation in Lake County is the highest point in Colorado and the Rocky Mountains of North America 3 Colorado is the only U S state that lies entirely above 1 000 meters elevation The point where the Arikaree River flows out of Yuma County Colorado and into Cheyenne County Kansas is the lowest point in Colorado at 3 317 feet 1 011 m elevation This point which is the highest low elevation point of any state 4 49 is higher than the high elevation points of 18 states and the District of Columbia Continental Divide Edit Grays Peak at 14 278 feet 4 352 m is the highest point on the Continental Divide in North America The Continental Divide of the Americas extends along the crest of the Rocky Mountains The area of Colorado to the west of the Continental Divide is called the Western Slope of Colorado West of the Continental Divide water flows to the southwest via the Colorado River and the Green River into the Gulf of California Within the interior of the Rocky Mountains are several large parks which are high broad basins In the north on the east side of the Continental Divide is the North Park of Colorado The North Park is drained by the North Platte River which flows north into Wyoming and Nebraska Just to the south of North Park but on the western side of the Continental Divide is the Middle Park of Colorado which is drained by the Colorado River The South Park of Colorado is the region of the headwaters of the South Platte River South Central region Edit The high desert lands that make up the San Luis Valley in Southern Colorado In south central Colorado is the large San Luis Valley where the headwaters of the Rio Grande are located The valley sits between the Sangre De Cristo Mountains and San Juan Mountains and consists of large desert lands that eventually run into the mountains The Rio Grande drains due south into New Mexico Mexico and Texas Across the Sangre de Cristo Range to the east of the San Luis Valley lies the Wet Mountain Valley These basins particularly the San Luis Valley lie along the Rio Grande Rift a major geological formation of the Rocky Mountains and its branches Colorado Western Slope Edit Maroon Bells at 14 163 ft 4 317 m is part of White River National Forest and a tourist destination The Colorado National Monument near Grand Junction is made up of high desert canyons and sandstone rock formations The Western Slope area of Colorado includes the western face of the Rocky Mountains and all of the states to the western border This area includes several terrains and climates from alpine mountains to arid deserts The Western Slope includes many ski resort towns in the Rocky Mountains and towns west of the mountains It is less populous than the Front Range but includes a large number of national parks and monuments From west to east the land of Colorado consists of desert lands desert plateaus alpine mountains National Forests relatively flat grasslands scattered forests buttes and canyons on the western edge of the Great Plains The famous Pikes Peak is located just west of Colorado Springs Its isolated peak is visible from nearly the Kansas border on clear days and also far to the north and the south 50 The northwestern corner of Colorado is a sparsely populated region and it contains part of the noted Dinosaur National Monument which not only is a paleontological area but is also a scenic area of rocky hills canyons arid desert and streambeds Here the Green River briefly crosses over into Colorado Desert lands in Colorado are located in and around areas such as the Pueblo Canon City Florence Great Sand Dunes National Park and Preserve San Luis Valley Cortez Canyon of the Ancients National Monument Hovenweep National Monument Ute Mountain Delta Grand Junction Colorado National Monument and other areas surrounding the Uncompahgre Plateau and Uncompahgre National Forest The Western Slope of Colorado is drained by the Colorado River and its tributaries primarily the Gunnison River Green River and the San Juan River or by evaporation in its arid areas The Colorado River flows through Glenwood Canyon and then through an arid valley made up of desert from Rifle to Parachute through the desert canyon of De Beque Canyon and into the arid desert of Grand Valley where the city of Grand Junction is located Also prominent in or near the southern portion of the Western Slope is the Grand Mesa which lies to the southeast of Grand Junction the high San Juan Mountains a rugged mountain range and to the west of the San Juan Mountains the Colorado Plateau a high arid region that borders Southern Utah Grand Junction Colorado is the largest city on the Western Slope Grand Junction and Durango are the only major centers of television broadcasting west of the Continental Divide in Colorado though most mountain resort communities publish daily newspapers Grand Junction is located along Interstate 70 the only major highway in Western Colorado Grand Junction is also along the major railroad of the Western Slope the Union Pacific This railroad also provides the tracks for Amtrak s California Zephyr passenger train which crosses the Rocky Mountains between Denver and Grand Junction via a route on which there are no continuous highways The Western Slope includes multiple notable destinations in the Colorado Rocky Mountains including Glenwood Springs with its resort hot springs and the ski resorts of Aspen Breckenridge Vail Crested Butte Steamboat Springs and Telluride Higher education in and near the Western Slope can be found at Colorado Mesa University in Grand Junction Western Colorado University in Gunnison Fort Lewis College in Durango and Colorado Mountain College in Glenwood Springs and Steamboat Springs The Four Corners Monument in the southwest corner of Colorado marks the common boundary of Colorado New Mexico Arizona and Utah the only such place in the United States See also List of cities and towns in Colorado List of counties in Colorado List of rivers of Colorado and Four Corners MonumentClimate Edit Koppen climate types of Colorado using 1991 2020 climate normals The climate of Colorado is more complex than states outside of the Mountain States region Unlike most other states southern Colorado is not always warmer than northern Colorado Most of Colorado is made up of mountains foothills high plains and desert lands Mountains and surrounding valleys greatly affect the local climate Northeast east and southeast Colorado are mostly the high plains while Northern Colorado is a mix of high plains foothills and mountains Northwest and west Colorado are predominantly mountainous with some desert lands mixed in Southwest and southern Colorado are a complex mixture of desert and mountain areas Eastern Plains Edit The climate of the Eastern Plains is semi arid Koppen climate classification BSk with low humidity and moderate precipitation usually from 15 to 25 inches 380 to 640 millimeters annually although many areas near the rivers is semi humid climate The area is known for its abundant sunshine and cool clear nights which give this area a great average diurnal temperature range The difference between the highs of the days and the lows of the nights can be considerable as warmth dissipates to space during clear nights the heat radiation not being trapped by clouds The Front Range urban corridor where most of the population of Colorado resides lies in a pronounced precipitation shadow as a result of being on the lee side of the Rocky Mountains 51 In summer this area can have many days above 95 F 35 C and often 100 F 38 C 52 On the plains the winter lows usually range from 25 to 10 F 4 to 23 C About 75 of the precipitation falls within the growing season from April to September but this area is very prone to droughts Most of the precipitation comes from thunderstorms which can be severe and from major snowstorms that occur in the winter and early spring Otherwise winters tend to be mostly dry and cold 53 In much of the region March is the snowiest month April and May are normally the rainiest months while April is the wettest month overall The Front Range cities closer to the mountains tend to be warmer in the winter due to Chinook winds which warm the area sometimes bringing temperatures of 70 F 21 C or higher in the winter 53 The average July temperature is 55 F 13 C in the morning and 90 F 32 C in the afternoon The average January temperature is 18 F 8 C in the morning and 48 F 9 C in the afternoon although variation between consecutive days can be 40 F 20 C Front Range foothills Edit Just west of the plains and into the foothills there is a wide variety of climate types Locations merely a few miles apart can experience entirely different weather depending on the topography Most valleys have a semi arid climate not unlike the eastern plains which transitions to an alpine climate at the highest elevations Microclimates also exist in local areas that run nearly the entire spectrum of climates including subtropical highland Cfb Cwb humid subtropical Cfa humid continental Dfa Dfb Mediterranean Csa Csb and subarctic Dfc 54 Extreme weather Edit Extreme weather changes are common in Colorado although a significant portion of the extreme weather occurs in the least populated areas of the state Thunderstorms are common east of the Continental Divide in the spring and summer yet are usually brief Hail is a common sight in the mountains east of the Divide and across the eastern Plains especially the northeast part of the state Hail is the most commonly reported warm season severe weather hazard and occasionally causes human injuries as well as significant property damage 55 The eastern Plains are subject to some of the biggest hail storms in North America 46 Notable examples are the severe hailstorms that hit Denver on July 11 1990 56 and May 8 2017 the latter being the costliest ever in the state 57 The Eastern Plains are part of the extreme western portion of Tornado Alley some damaging tornadoes in the Eastern Plains include the 1990 Limon F3 tornado and the 2008 Windsor EF3 tornado which devastated a small town 58 Portions of the eastern Plains see especially frequent tornadoes both those spawned from mesocyclones in supercell thunderstorms and from less intense landspouts such as within the Denver convergence vorticity zone DCVZ 55 The Plains are also susceptible to occasional floods and particularly severe flash floods which are caused both by thunderstorms and by the rapid melting of snow in the mountains during warm weather Notable examples include the 1965 Denver Flood 59 the Big Thompson River flooding of 1976 and the 2013 Colorado floods Hot weather is common during summers in Denver The city s record in 1901 for the number of consecutive days above 90 F 32 C was broken during the summer of 2008 The new record of 24 consecutive days surpassed the previous record by almost a week 60 Much of Colorado is very dry with the state averaging only 17 inches 430 millimeters of precipitation per year statewide The state rarely experiences a time when some portion is not in some degree of drought 61 The lack of precipitation contributes to the severity of wildfires in the state such as the Hayman Fire of 2002 Other notable fires include the Fourmile Canyon Fire of 2010 the Waldo Canyon Fire and High Park Fire of June 2012 and the Black Forest Fire of June 2013 Even these fires were exceeded in severity by the Pine Gulch Fire Cameron Peak Fire and East Troublesome Fire in 2020 all being the three largest fires in Colorado history see 2020 Colorado wildfires And the Marshall Fire which started on December 30 2021 while not the largest in state history was the most destructive ever in terms of property loss see Marshall Fire However some of the mountainous regions of Colorado receive a huge amount of moisture from winter snowfalls The spring melts of these snows often cause great waterflows in the Yampa River the Colorado River the Rio Grande the Arkansas River the North Platte River and the South Platte River Water flowing out of the Colorado Rocky Mountains is a very significant source of water for the farms towns and cities of the southwest states of New Mexico Arizona Utah and Nevada as well as the Midwest such as Nebraska and Kansas and the southern states of Oklahoma and Texas A significant amount of water is also diverted for use in California occasionally formerly naturally and consistently the flow of water reaches northern Mexico Climate change Edit These paragraphs are an excerpt from Climate change in Colorado edit Climate change in Colorado encompasses the effects of climate change attributed to man made increases in atmospheric carbon dioxide in the U S state of Colorado In 2019 The Denver Post reported that i ndividuals living in southeastern Colorado are more vulnerable to potential health effects from climate change than residents in other parts of the state 62 The United States Environmental Protection Agency has more broadly reported Colorado s climate is changing Most of the state has warmed one or two degrees F in the last century Throughout the western United States heat waves are becoming more common snow is melting earlier in spring and less water flows through the Colorado River 63 64 Rising temperatures 65 and recent droughts 66 in the region have killed many trees by drying out soils increasing the risk of forest fires or enabling outbreaks of forest insects In the coming decades the changing climate is likely to decrease water availability and agricultural yields in Colorado and further increase the risk of wildfires 67 Records Edit The highest official ambient air temperature ever recorded in Colorado was 115 F 46 1 C on July 20 2019 at John Martin Dam The lowest official air temperature was 61 F 51 7 C on February 1 1985 at Maybell 68 69 Monthly normal high and low temperatures for various Colorado cities 70 F C City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov DecAlamosa 34 22 19 40 64 14 50 1710 8 59 2415 4 69 3321 1 79 4126 5 82 4728 8 80 4627 8 73 4023 4 62 2517 4 47 128 11 35 12 17Colorado Springs 43 186 8 45 207 7 52 2611 3 60 3316 1 69 4321 6 79 5126 11 85 5729 14 82 5628 13 75 4724 8 63 3617 2 51 2511 4 42 186 8Denver 49 209 7 49 219 6 56 2913 2 64 3518 2 73 4623 8 84 5429 12 92 6133 16 89 6032 16 81 5027 10 68 3720 3 55 2613 3 47 188 8Grand Junction 38 173 8 45 247 4 57 3114 1 65 3818 3 76 4724 8 88 5631 13 93 6334 17 90 6132 16 80 5227 11 66 4019 4 51 2811 2 39 194 7Pueblo 47 148 10 51 1711 8 59 2615 3 67 3419 1 77 4425 7 87 5331 12 93 5934 15 90 5832 14 82 4828 9 69 3421 1 56 2313 5 46 148 10Earthquakes Edit Despite its mountainous terrain Colorado is relatively quiet seismically The U S National Earthquake Information Center is located in Golden On August 22 2011 a 5 3 magnitude earthquake occurred 9 miles 14 km west southwest of the city of Trinidad 71 There were no casualties and only a small amount of damage was reported It was the second largest earthquake in Colorado s history A magnitude 5 7 earthquake was recorded in 1973 72 In early morning hours of August 24 2018 four minor earthquakes rattled Colorado ranging from magnitude 2 9 to 4 3 73 Colorado has recorded 525 earthquakes since 1973 a majority of which range 2 to 3 5 on the Richter scale 74 Fauna EditFurther information on the lists of amphibians birds mammals and reptiles Breckenridge naturalist Edwin Carter with a mounted gray wolf killed in the Colorado Rockies ca 1890 1900 A process of extirpation by trapping and poisoning of the gray wolf Canis lupus from Colorado in the 1930s saw the last wild wolf in the state shot in 1945 75 A wolf pack recolonized Moffat County Colorado in northwestern Colorado in 2019 76 Cattle farmers have expressed concern that a returning wolf population potentially threatens their herds 75 Coloradoans voted to reintroduce gray wolves in 2020 with the state committing to a plan to have a population in the state by 2022 and permitting non lethal methods of driving off wolves attacking livestock and pets 77 78 While there is fossil evidence of Harrington s mountain goat in Colorado between at least 800 000 years ago and its extinction with megafauna roughly 11 000 years ago the mountain goat is not native to Colorado but was instead introduced to the state over time during the interval between 1947 and 1972 Despite being an artificially introduced species the state declared mountain goats a native species in 1993 79 In 2013 2014 and 2019 an unknown illness killed nearly all mountain goat kids leading to a Colorado Parks and Wildlife investigation 80 81 The native population of pronghorn in Colorado has varied wildly over the last century reaching a low of only 15 000 individuals during the 1960s However conservation efforts succeeded in bring the stable population back up to roughly 66 000 by 2013 82 The population was estimated to have reached 85 000 by 2019 and had increasingly more run ins with the increased suburban housing along the eastern Front Range State wildlife officials suggested that landowners would need to modify fencing to allow the greater number of pronghorns to move unabated through the newly developed land 83 Pronghorns are most readily found in the northern and eastern portions of the state with some populations also in the western San Juan Mountains 84 Common wildlife found in the mountains of Colorado include mule deer southwestern red squirrel golden mantled ground squirrel yellow bellied marmot moose American pika and red fox all at exceptionally high numbers though moose are not native to the state 85 86 87 88 The foothills include deer fox squirrel desert cottontail mountain cottontail and coyote 89 90 The prairies are home to black tailed prairie dog the endangered swift fox American badger and white tailed jackrabbit 91 92 93 Counties EditMap this section s coordinates in Population history of Colorado counties using OpenStreetMap Download coordinates as KMLMain article List of counties in Colorado The State of Colorado is divided into 64 counties Two of these counties the City and County of Broomfield and the City and County of Denver have consolidated city and county governments Counties are important units of government in Colorado since there are no civil townships or other minor civil divisions The most populous county in Colorado is El Paso County the home of the City of Colorado Springs The second most populous county is the City and County of Denver the state capital Five of the 64 counties now have more than 500 000 residents while 12 have fewer than 5 000 residents The ten most populous Colorado counties are all located in the Front Range Urban Corridor Mesa County is the most populous county on the Colorado Western Slope b Pikes Peak and Garden of the Gods in El Paso County Colorado The 16 most populous Colorado counties 2021 Rank b County County seat 2021 Population b 1 El Paso County Colorado Springs 737 8672 City and County of Denver Denver c 711 4633 Arapahoe County Littleton 654 9004 Jefferson County Golden 579 5815 Adams County Brighton 522 1406 Douglas County Castle Rock 368 9907 Larimer County Fort Collins 362 5338 Weld County Greeley 340 0369 Boulder County Boulder 329 54310 Pueblo County Pueblo 169 62211 Mesa County Grand Junction 157 33512 City and County of Broomfield Broomfield d 75 32513 Garfield County Glenwood Springs 62 16114 La Plata County Durango 56 25015 Eagle County Eagle 55 72716 Fremont County Canon City 49 661Municipalities Edit Map this section s coordinates in List of municipalities in Colorado using OpenStreetMap Download coordinates as KMLMain article List of municipalities in Colorado Colorado has 272 active incorporated municipalities comprising 197 towns 73 cities and two consolidated city and county governments 95 96 At the 2020 United States census 4 299 942 of the 5 773 714 Colorado residents 74 47 lived in one of these 272 municipalities Another 714 417 residents 12 37 lived in one of the 210 census designated places while the remaining 759 355 residents 13 15 lived in the many rural and mountainous areas of the state 10 Colorado municipalities operate under one of five types of municipal governing authority Colorado currently has two consolidated city and county governments 61 home rule cities 12 statutory cities 35 home rule towns 161 statutory towns and one territorial charter municipality The most populous municipality is the City and County of Denver Colorado now has 13 municipalities with more than 100 000 residents and 17 with fewer than 100 residents The 16 most populous Colorado municipalities are all located in the Front Range Urban Corridor The City of Grand Junction is the most populous municipality on the Colorado Western Slope The Town of Carbonate has had no year round population since the 1890 census due to its severe winter weather and difficult access e The evening skyline of downtown Denver The 20 most populous Colorado municipalities 2021 Rank e Municipality County 2021 Population e 1 City and County of Denver City and County of Denver 711 4632 City of Colorado Springs El Paso County 483 9563 City of Aurora Arapahoe Adams and Douglas counties 389 3474 City of Fort Collins Larimer County 168 5385 City of Lakewood Jefferson County 156 6056 City of Thornton Adams and Weld counties 142 6107 City of Arvada Jefferson and Adams counties 123 4368 City of Westminster Adams and Jefferson counties 114 5619 City of Pueblo Pueblo County 112 36810 City of Greeley Weld County 109 32311 City of Centennial Arapahoe County 106 96612 City of Boulder Boulder County 104 17513 City of Longmont Boulder and Weld counties 100 75814 City of Loveland Larimer County 77 19415 Town of Castle Rock Douglas County 76 35316 City and County of Broomfield City and County of Broomfield 75 32517 City of Grand Junction Mesa County 66 96418 City of Commerce City Adams County 64 28719 Town of Parker Douglas County 60 31320 City of Littleton Arapahoe Jefferson and Douglas counties 45 191Unincorporated communities Edit Map this section s coordinates in List of census designated places in Colorado using OpenStreetMap Download coordinates as KMLMain articles List of census designated places in Colorado and List of populated places in Colorado In addition to its 272 municipalities Colorado has 210 unincorporated census designated places CDPs and many other small communities The most populous unincorporated community in Colorado is Highlands Ranch south of Denver The seven most populous CDPs are located in the Front Range Urban Corridor The Clifton CDP is the most populous CDP on the Colorado Western Slope 98 Highlands Ranch Colorado The ten most populous census designated places in Colorado 2020 Rank 10 Census designated place County 2020 census 10 1 Highlands Ranch CDP Douglas County 103 4442 Security Widefield CDP El Paso County 38 6393 Dakota Ridge CDP Jefferson County 33 8924 Ken Caryl CDP Jefferson County 33 8115 Pueblo West CDP Pueblo County 33 0866 Columbine CDP Jefferson and Arapahoe counties 25 2297 Four Square Mile CDP Arapahoe County 22 8728 Clifton CDP Mesa County 20 4139 Cimarron Hills CDP El Paso County 19 31110 Sherrelwood CDP Adams County 19 228Special districts Edit Colorado has more than 4 000 special districts most with property tax authority These districts may provide schools law enforcement fire protection water sewage drainage irrigation transportation recreation infrastructure cultural facilities business support redevelopment or other services Some of these districts have the authority to levy sales tax as well as property tax and use fees This has led to a hodgepodge of sales tax and property tax rates in Colorado There are some street intersections in Colorado with a different sales tax rate on each corner sometimes substantially different Some of the more notable Colorado districts are The Regional Transportation District RTD which affects the counties of Denver Boulder Jefferson and portions of Adams Arapahoe Broomfield and Douglas Counties The Scientific and Cultural Facilities District SCFD a special regional tax district with physical boundaries contiguous with county boundaries of Adams Arapahoe Boulder Broomfield Denver Douglas and Jefferson Counties It is a 0 1 retail sales and uses tax one penny on every 10 According to the Colorado statute the SCFD distributes the money to local organizations on an annual basis These organizations must provide for the enlightenment and entertainment of the public through the production presentation exhibition advancement or preservation of art music theater dance zoology botany natural history or cultural history As directed by statute SCFD recipient organizations are currently divided into three tiers among which receipts are allocated by percentage Tier I includes regional organizations the Denver Art Museum the Denver Botanic Gardens the Denver Museum of Nature and Science the Denver Zoo and the Denver Center for the Performing Arts It receives 65 5 Tier II currently includes 26 regional organizations Tier II receives 21 Tier III has more than 280 local organizations such as small theaters orchestras art centers natural history cultural history and community groups Tier III organizations apply for funding from the county cultural councils via a grant process This tier receives 13 5 An 11 member board of directors oversees the distributions by the Colorado Revised Statutes Seven board members are appointed by county commissioners in Denver the Denver City Council and four members are appointed by the Governor of Colorado The Football Stadium District FD or FTBL approved by the voters to pay for and help build the Denver Broncos stadium Empower Field at Mile High Local Improvement Districts LID within designated areas of Jefferson and Broomfield counties The Metropolitan Major League Baseball Stadium District approved by voters to pay for and help build the Colorado Rockies stadium Coors Field Regional Transportation Authority RTA taxes at varying rates in Basalt Carbondale Glenwood Springs and Gunnison County Statistical areas EditMain article List of statistical areas in Colorado An enlargeable map of the 17 core based statistical areas of Colorado Most recently on March 6 2020 the Office of Management and Budget defined 21 statistical areas for Colorado comprising four combined statistical areas seven metropolitan statistical areas and ten micropolitan statistical areas 99 The most populous of the seven metropolitan statistical areas in Colorado is the 10 county Denver Aurora Lakewood CO Metropolitan Statistical Area with a population of 2 963 821 at the 2020 United States census an increase of 15 29 since the 2010 census 10 The more extensive 12 county Denver Aurora CO Combined Statistical Area had a population of 3 623 560 at the 2020 census an increase of 17 23 since the 2010 census 10 The most populous extended metropolitan region in Rocky Mountain Region is the 18 county Front Range Urban Corridor along the northeast face of the Southern Rocky Mountains This region with Denver at its center had a population of 5 055 344 at the 2020 census an increase of 16 65 since the 2010 census 10 Demographics Edit Colorado population density map The 2020 United States census enumerated the population of the State of Colorado at 5 773 714 an increase of 14 80 since the 2010 United States census 10 The largest future increases are expected in the Front Range Urban Corridor Historical populationCensus Pop 186034 277 187039 86416 3 1880194 327387 5 1890413 249112 7 1900539 70030 6 1910799 02448 0 1920939 62917 6 19301 035 79110 2 19401 123 2968 4 19501 325 08918 0 19601 753 94732 4 19702 207 25925 8 19802 889 96430 9 19903 294 39414 0 20004 301 26230 6 20105 029 19616 9 20205 773 71414 8 U S Decennial CensusEthnic composition as of the 2020 census Race and Ethnicity 100 Non Hispanic TotalWhite non Hispanic 65 1 65 1 69 4 69 4 Hispanic or Latino f 21 9 21 9 Black non Hispanic 3 8 3 8 4 9 4 9 Asian 3 4 3 4 4 7 4 7 Native American 0 6 0 6 2 1 2 1 Pacific Islander 0 2 0 2 0 4 0 4 Other 0 5 0 5 1 5 1 5 Colorado historical racial demographics Racial composition 1970 101 1990 101 2000 102 2010 103 White includes White Hispanics 95 7 88 2 82 8 81 3 Black 3 0 4 0 3 8 4 0 Asian 0 5 1 8 2 2 2 8 Native 0 4 0 8 1 0 1 1 Native Hawaiian andother Pacific Islander 0 1 0 1 Other race 0 4 5 1 7 2 7 2 Two or more races 2 8 3 4 Map of counties in Colorado by racial plurality per the 2020 U S censusLegend Non Hispanic White 40 50 50 60 60 70 70 80 80 90 Hispanic or Latino 40 50 50 60 People of Hispanic and Latino American of any race made heritage made up 20 7 of the population 104 According to the 2000 census the largest ancestry groups in Colorado are German 22 including of Swiss and Austrian nationalities Mexican 18 Irish 12 and English 12 Persons reporting German ancestry are especially numerous in the Front Range the Rockies west central counties and Eastern parts High Plains Colorado has a high proportion of Hispanic mostly Mexican American citizens in Metropolitan Denver Colorado Springs as well as the smaller cities of Greeley and Pueblo and elsewhere Southern Southwestern and Southeastern Colorado has a large number of Hispanos the descendants of the early settlers of colonial Spanish origin In 1940 the U S Census Bureau reported Colorado s population as 8 2 Hispanic and 90 3 non Hispanic white 105 The Hispanic population of Colorado has continued to grow quickly over the past decades By 2019 Hispanics made up 22 of Colorado s population and Non Hispanic Whites made up 70 106 Spoken English in Colorado has many Spanish idioms 107 Colorado also has some large African American communities located in Denver in the neighborhoods of Montbello Five Points Whittier and many other East Denver areas The state has sizable numbers of Asian Americans of Mongolian Chinese Filipino Korean Southeast Asian and Japanese descent The highest population of Asian Americans can be found on the south and southeast side of Denver as well as some on Denver s southwest side The Denver metropolitan area is considered more liberal and diverse than much of the state when it comes to political issues and environmental concerns There were a total of 70 331 births in Colorado in 2006 Birth rate of 14 6 per thousand In 2007 non Hispanic whites were involved in 59 1 of all the births 108 Some 14 06 of those births involved a non Hispanic white person and someone of a different race most often with a couple including one Hispanic A birth where at least one Hispanic person was involved counted for 43 of the births in Colorado 109 As of the 2010 census Colorado has the seventh highest percentage of Hispanics 20 7 in the U S behind New Mexico 46 3 California 37 6 Texas 37 6 Arizona 29 6 Nevada 26 5 and Florida 22 5 Per the 2000 census the Hispanic population is estimated to be 918 899 or approximately 20 of the state total population Colorado has the 5th largest population of Mexican Americans behind California Texas Arizona and Illinois In percentages Colorado has the 6th highest percentage of Mexican Americans behind New Mexico California Texas Arizona and Nevada 110 Birth data Edit In 2011 46 of Colorado s population younger than the age of one were minorities meaning that they had at least one parent who was not non Hispanic white 111 112 Note Births in table don t add up because Hispanics are counted both by their ethnicity and by their race giving a higher overall number Live Births by Single Race Ethnicity of Mother Race 2013 113 2014 114 2015 115 2016 116 2017 117 2018 118 2019 119 2020 120 White 57 491 88 4 58 117 88 3 58 756 88 2 gt non Hispanic White 39 872 61 3 40 629 61 7 40 878 61 4 39 617 59 5 37 516 58 3 36 466 58 0 36 022 57 3 34 924 56 8 Black 3 760 5 8 3 926 6 0 4 049 6 1 3 004 4 5 3 110 4 8 3 032 4 8 3 044 4 8 3 146 5 1 Asian 2 863 4 4 3 010 4 6 2 973 4 5 2 617 3 9 2 611 4 1 2 496 4 0 2 540 4 0 2 519 4 1 American Indian 793 1 2 777 1 2 803 1 2 412 0 6 421 0 7 352 0 6 365 0 6 338 0 5 Pacific Islander 145 0 2 145 0 2 155 0 2 168 0 3 169 0 3 Hispanic of any race 17 821 27 4 17 665 26 8 18 139 27 2 18 513 27 8 18 125 28 2 17 817 28 3 18 205 29 0 18 111 29 4 Total Colorado 65 007 100 65 830 100 66 581 100 66 613 100 64 382 100 62 885 100 62 869 100 61 494 100 Since 2016 data for births of White Hispanic origin are not collected but included in one Hispanic group persons of Hispanic origin may be of any race In 2017 Colorado recorded the second lowest fertility rate in the United States outside of New England after Oregon at 1 63 children per woman 117 Significant contributing factors to the decline in pregnancies were the Title X Family Planning Program and an intrauterine device grant from Warren Buffett s family 121 122 Language Edit English the official language of the state is the most commonly spoken in Colorado followed by Spanish 123 One Native American language still spoken in Colorado is the Colorado River Numic language also known as the Ute dialect Religion Edit Religion in Colorado 2014 124 Religion PercentProtestant 44 No Religion 29 Catholic 16 Mormon 3 Eastern Orthodox 1 Jewish 1 Muslim 1 Buddhist 1 Other 4 Major religious affiliations of the people of Colorado as of 2014 were 64 Christian of whom there are 44 Protestant 16 Roman Catholic 3 Mormon and 1 Eastern Orthodox 125 Other religious breakdowns according to the Pew Research Center were 1 Jewish 1 Muslim 1 Buddhist and 4 other The religiously unaffiliated made up 29 of the population 126 In 2020 according to the Public Religion Research Institute Christianity was 66 of the population Judaism was also reported to have increased in this separate study forming 2 of the religious landscape while the religiously unaffiliated were reported to form 28 of the population at this separate study 127 The largest denominations by number of adherents in 2010 were the Catholic Church with 811 630 multi denominational Evangelical Protestants with 229 981 and the Church of Jesus Christ of Latter day Saints with 151 433 128 Our Lady of Guadalupe Catholic Church was the first permanent Catholic parish in modern day Colorado and was constructed by Spanish colonists from New Mexico in modern day Conejos 129 Latin Church Catholics are served by three dioceses the Archdiocese of Denver and the Dioceses of Colorado Springs and Pueblo The first permanent settlement by members of the Church of Jesus Christ of Latter day Saints in Colorado arrived from Mississippi and initially camped along the Arkansas River just east of the present day site of Pueblo 130 Health Edit Colorado is generally considered among the healthiest states by behavioral and healthcare researchers Among the positive contributing factors is the state s well known outdoor recreation opportunities and initiatives 131 However there is a stratification of health metrics with wealthier counties such as Douglas and Pitkin performing significantly better relative to southern less wealthy counties such as Huerfano and Las Animas 132 Obesity Edit According to several studies Coloradans have the lowest rates of obesity of any state in the US 133 As of 2018 update 24 of the population was considered medically obese and while the lowest in the nation the percentage had increased from 17 in 2004 134 135 Life expectancy Edit According to a report in the Journal of the American Medical Association residents of Colorado had a 2014 life expectancy of 80 21 years the longest of any U S state 136 Economy EditMain article Economy of Colorado See also Colorado locations by per capita income Denver Energy Center lies in the Denver financial district along 17th Street known as the Wall Street of the West Corn growing in Larimer County Total employment 2019 2 473 192 Number of employer establishments 174 258 137 The total state product in 2015 was 318 6 billion 138 Median Annual Household Income in 2016 was 70 666 8th in the nation 139 Per capita personal income in 2010 was 51 940 ranking Colorado 11th in the nation 140 The state s economy broadened from its mid 19th century roots in mining when irrigated agriculture developed and by the late 19th century raising livestock had become important Early industry was based on the extraction and processing of minerals and agricultural products Current agricultural products are cattle wheat dairy products corn and hay The federal government operates several federal facilities in the state including NORAD North American Aerospace Defense Command United States Air Force Academy Schriever Air Force Base located approximately 10 miles 16 kilometers east of Peterson Air Force Base and Fort Carson both located in Colorado Springs within El Paso County NOAA the National Renewable Energy Laboratory NREL in Golden and the National Institute of Standards and Technology in Boulder U S Geological Survey and other government agencies at the Denver Federal Center near Lakewood the Denver Mint Buckley Space Force Base the Tenth Circuit Court of Appeals and the Byron G Rogers Federal Building and United States Courthouse in Denver and a federal Supermax Prison and other federal prisons near Canon City In addition to these and other federal agencies Colorado has abundant National Forest land and four National Parks that contribute to federal ownership of 24 615 788 acres 99 617 km2 of land in Colorado or 37 of the total area of the state 141 In the second half of the 20th century the industrial and service sectors expanded greatly The state s economy is diversified and is notable for its concentration on scientific research and high technology industries Other industries include food processing transportation equipment machinery chemical products the extraction of metals such as gold see Gold mining in Colorado silver and molybdenum Colorado now also has the largest annual production of beer in any state 142 Denver is an important financial center The state s diverse geography and majestic mountains attract millions of tourists every year including 85 2 million in 2018 Tourism contributes greatly to Colorado s economy with tourists generating 22 3 billion in 2018 143 Several nationally known brand names have originated in Colorado factories and laboratories From Denver came the forerunner of telecommunications giant Qwest in 1879 Samsonite luggage in 1910 Gates belts and hoses in 1911 and Russell Stover Candies in 1923 Kuner canned vegetables began in Brighton in 1864 From Golden came Coors beer in 1873 CoorsTek industrial ceramics in 1920 and Jolly Rancher candy in 1949 CF amp I railroad rails wire nails and pipe debuted in Pueblo in 1892 Holly Sugar was first milled from beets in Holly in 1905 and later moved its headquarters to Colorado Springs The present day Swift packed meat of Greeley evolved from Monfort of Colorado Inc established in 1930 Estes model rockets were launched in Penrose in 1958 Fort Collins has been the home of Woodward Governor Company s motor controllers governors since 1870 and Waterpik dental water jets and showerheads since 1962 Celestial Seasonings herbal teas have been made in Boulder since 1969 Rocky Mountain Chocolate Factory made its first candy in Durango in 1981 Colorado has a flat 4 63 income tax regardless of income level On November 3 2020 voters authorized an initiative to lower that income tax rate to 4 55 percent Unlike most states which calculate taxes based on federal adjusted gross income Colorado taxes are based on taxable income income after federal exemptions and federal itemized or standard deductions 144 145 Colorado s state sales tax is 2 9 on retail sales When state revenues exceed state constitutional limits according to Colorado s Taxpayer Bill of Rights legislation full year Colorado residents can claim a sales tax refund on their individual state income tax return Many counties and cities charge their own rates in addition to the base state rate There are also certain county and special district taxes that may apply Real estate and personal business property are taxable in Colorado The state s senior property tax exemption was temporarily suspended by the Colorado Legislature in 2003 The tax break was scheduled to return for the assessment year 2006 payable in 2007 As of December 2018 update the state s unemployment rate was 4 2 146 The West Virginia teachers strike in 2018 inspired teachers in other states including Colorado to take similar action 147 Agriculture Edit Corn in grown in the Eastern Plains of Colorado Arid conditions and drought negatively impacted yields in 2020 148 and 2022 149 Natural resources Edit An oil well in western Colorado Colorado has significant hydrocarbon resources According to the Energy Information Administration Colorado hosts seven of the largest natural gas fields in the United States and two of the largest oil fields Conventional and unconventional natural gas output from several Colorado basins typically account for more than five percent of annual U S natural gas production Colorado s oil shale deposits hold an estimated 1 trillion barrels 160 km3 of oil nearly as much oil as the entire world s proven oil reserves 150 Substantial deposits of bituminous subbituminous and lignite coal are found in the state Uranium mining in Colorado goes back to 1872 when pitchblende ore was taken from gold mines near Central City Colorado Not counting byproduct uranium from phosphate Colorado is considered to have the third largest uranium reserves of any U S state behind Wyoming and New Mexico When Colorado and Utah dominated radium mining from 1910 to 1922 uranium and vanadium were the byproducts giving towns like present day Superfund site Uravan their names 151 Uranium price increases from 2001 to 2007 prompted several companies to revive uranium mining in Colorado During the 1940s certain communities including Naturita and Paradox earned the moniker of yellowcake towns from their relationship with uranium mining Price drops and financing problems in late 2008 forced these companies to cancel or scale back the uranium mining project As of 2016 there were no major uranium mining operations in the state though plans existed to restart production 152 Electricity generation Edit See also List of power stations in Colorado Colorado s high Rocky Mountain ridges and eastern plains offer wind power potential and geologic activity in the mountain areas provides potential for geothermal power development Much of the state is sunny and could produce solar power Major rivers flowing from the Rocky Mountains offer hydroelectric power resources Culture Edit History Colorado Center in Denver Street art in Denver Arts and film Edit List of museums in Colorado List of theaters in Colorado Music of ColoradoA number of film productions have shot on location in Colorado especially prominent Westerns like True Grit The Searchers and Butch Cassidy and the Sundance Kid Several historic military forts railways with trains still operating and mining ghost towns have been used and transformed for historical accuracy in well known films There are also several scenic highways and mountain passes that helped to feature the open road in films such as Vanishing Point Bingo and Starman Some Colorado landmarks have been featured in films such as The Stanley Hotel in Dumb and Dumber and The Shining and the Sculptured House in Sleeper In 2015 Furious 7 was to film driving sequences on Pikes Peak Highway in Colorado The TV series Good Luck Charlie was set but not filmed in Denver Colorado The Colorado Office of Film and Television has noted that more than 400 films have been shot in Colorado 153 There are also a number of established film festivals in Colorado including Aspen Shortsfest Boulder International Film Festival Castle Rock Film Festival Denver Film Festival Festivus Film Festival Mile High Horror Film Festival Moondance International Film Festival Mountainfilm in Telluride Rocky Mountain Women s Film Festival and Telluride Film Festival Many notable writers have lived or spent extended periods of time in Colorado Beat Generation writers Jack Kerouac and Neal Cassady lived in and around Denver for several years each 154 Irish playwright Oscar Wilde visited Colorado on his tour of the United States in 1882 writing in his 1906 Impressions of America that Leadville was the richest city in the world It has also got the reputation of being the roughest and every man carries a revolver 155 156 Cuisine Edit Colorado is known for its Southwest and Rocky Mountain cuisine with Mexican restaurants found throughout the state Boulder was named America s Foodiest Town 2010 by Bon Appetit 157 Boulder and Colorado in general is home to a number of national food and beverage companies top tier restaurants and farmers markets Boulder also has more Master Sommeliers per capita than any other city including San Francisco and New York 158 Denver is known for steak but now has a diverse culinary scene with many restaurants 159 Polidori Sausage is a brand of pork products available in supermarkets which originated in Colorado in the early 20th century 160 The Food amp Wine Classic is held annually each June in Aspen Aspen also has a reputation as the culinary capital of the Rocky Mountain region 161 Wine and beer Edit Main articles Colorado wine and Colorado beer Colorado wines include award winning varietals that have attracted favorable notice from outside the state 162 With wines made from traditional Vitis vinifera grapes along with wines made from cherries peaches plums and honey Colorado wines have won top national and international awards for their quality 163 Colorado s grape growing regions contain the highest elevation vineyards in the United States 164 with most viticulture in the state practiced between 4 000 and 7 000 feet 1 219 and 2 134 m above sea level The mountain climate ensures warm summer days and cool nights Colorado is home to two designated American Viticultural Areas of the Grand Valley AVA and the West Elks AVA 165 where most of the vineyards in the state are located However an increasing number of wineries are located along the Front Range 166 In 2018 Wine Enthusiast Magazine named Colorado s Grand Valley AVA in Mesa County Colorado as one of the Top Ten wine travel destinations in the world 167 Colorado is home to many nationally praised microbreweries 168 including New Belgium Brewing Company Odell Brewing Company Great Divide Brewing Company and Bristol Brewing Company The area of northern Colorado near and between the cities of Denver Boulder and Fort Collins is known as the Napa Valley of Beer due to its high density of craft breweries 169 Marijuana and hemp Edit Colorado is open to cannabis marijuana tourism 170 With the adoption of the 64th state amendment in 2012 Colorado became the first state in the union to legalize marijuana for medicinal 2000 industrial referring to hemp 2012 and recreational 2012 use Colorado s marijuana industry sold 1 31 billion worth of marijuana in 2016 and 1 26 billion in the first three quarters of 2017 171 The state generated tax fee and license revenue of 194 million in 2016 on legal marijuana sales 172 Colorado regulates hemp as any part of the plant with less than 0 3 THC 173 On April 4 2014 Senate Bill 14 184 addressing oversight of Colorado s industrial hemp program was first introduced ultimately being signed into law by Governor John Hickenlooper on May 31 2014 174 Medicinal use Edit On November 7 2000 54 of Colorado voters passed Amendment 20 which amends the Colorado State constitution to allow the medical use of marijuana 175 A patient s medical use of marijuana within the following limits is lawful I No more than 2 ounces 57 g of a usable form of marijuana and II No more than twelve marijuana plants with six or fewer being mature flowering plants that are producing a usable form of marijuana 176 Currently Colorado has listed eight medical conditions for which patients can use marijuana cancer glaucoma HIV AIDS muscle spasms seizures severe pain severe nausea and cachexia or dramatic weight loss and muscle atrophy 177 While governor John Hickenlooper allocated about half of the state s 13 million Medical Marijuana Program Cash Fund 178 to medical research in the 2014 budget 179 By 2018 the Medical Marijuana Program Cash Fund was the largest pool of pot money in the state and was used to fund programs including research into pediatric applications for controlling autism symptoms 180 Recreational use Edit On November 6 2012 voters amended the state constitution to protect personal use of marijuana for adults establishing a framework to regulate marijuana in a manner similar to alcohol 181 The first recreational marijuana shops in Colorado and by extension the United States opened their doors on January 1 2014 182 Sports Edit Main article Sports in Colorado The Colorado Rockies baseball club at Coors Field Empower Field at Mile High in Denver home field of the Denver Broncos and the Denver Outlaws Ball Arena home of the Denver Nuggets the Colorado Avalanche and the Colorado Mammoth Dick s Sporting Goods Park home of the Colorado Rapids Colorado has five major professional sports leagues all based in the Denver metropolitan area Colorado is the least populous state with a franchise in each of the major professional sports leagues The Colorado Springs Snow Sox professional baseball team is based in Colorado Springs The team is a member of the Pecos League an independent baseball league which is not affiliated with Major or Minor League Baseball 183 184 The Pikes Peak International Hill Climb is a major hill climbing motor race held on the Pikes Peak Highway The Cherry Hills Country Club has hosted several professional golf tournaments including the U S Open U S Senior Open U S Women s Open PGA Championship and BMW Championship Professional sports teams Edit Team Home First game Sport LeagueColorado Avalanche Denver October 6 1995 Ice hockey National Hockey LeagueColorado Eagles Loveland October 17 2003 Ice hockey American Hockey LeagueColorado Mammoth Denver January 3 2003 Lacrosse National Lacrosse LeagueColorado Rapids Commerce City April 13 1996 Soccer Major League SoccerColorado Rapids 2 Denver March 27 2022 Soccer MLS Next ProColorado Rockies Denver April 5 1993 Baseball Major League BaseballColorado Springs Switchbacks FC Colorado Springs March 28 2015 Soccer USL ChampionshipDenver Barbarians Denver Spring 1967 Rugby union Pacific Rugby PremiershipDenver Broncos Denver September 9 1960 American football National Football LeagueDenver Nuggets Denver September 27 1967 Basketball National Basketball AssociationGlendale Raptors Glendale Fall 2006 Rugby union Major League RugbyGrand Junction Rockies Grand Junction June 18 2012 Baseball Pioneer LeagueNorthern Colorado Hailstorm FC Windsor April 6 2022 Soccer USL League OneNorthern Colorado Owlz Windsor May 25 2022 Baseball Pioneer LeagueRocky Mountain Vibes Colorado Springs June 2019 Baseball Pioneer LeagueCollege athletics Edit Main article List of college athletic programs in Colorado Weidner Field in Colorado Springs home of the Colorado Springs Switchbacks FC The following universities and colleges participate in the National Collegiate Athletic Association Division I The most popular college sports program is the University of Colorado Buffaloes who used to play in the Big 12 but now play in the Pac 12 They have won the 1957 and 1991 Orange Bowl 1995 Fiesta Bowl and 1996 Cotton Bowl Classic NCAA Division I athletic programs in Colorado Team School City ConferenceAir Force Falcons United States Air Force Academy Colorado Springs Mountain West g Colorado Buffaloes University of Colorado Boulder Boulder Pac 12 h Colorado State Rams Colorado State University Fort Collins Mountain WestDenver Pioneers University of Denver Denver NCHC Summit i Northern Colorado Bears University of Northern Colorado Greeley Big Sky j Colorado College Tigers Colorado College Colorado Springs NCHC Mountain West k Transportation EditMain article Transportation in Colorado A Colorado state welcome sign Colorado s primary mode of transportation in terms of passengers is its highway system Interstate 25 I 25 is the primary north south highway in the state connecting Pueblo Colorado Springs Denver and Fort Collins and extending north to Wyoming and south to New Mexico I 70 is the primary east west corridor It connects Grand Junction and the mountain communities with Denver and enters Utah and Kansas The state is home to a network of US and Colorado highways that provide access to all principal areas of the state Many smaller communities are connected to this network only via county roads The main terminal of Denver International Airport evokes the peaks of the Front Range Denver International Airport DIA is the third busiest domestic U S and international airport in the world by passenger traffic 185 DIA handles by far the largest volume of commercial air traffic in Colorado and is the busiest U S hub airport between Chicago and the Pacific coast making Denver the most important airport for connecting passenger traffic in the western United States Public transportation bus services are offered both intra city and inter city including the Denver metro area s RTD services The Regional Transportation District RTD operates the popular RTD Bus amp Rail transit system in the Denver Metropolitan Area As of January 2013 update the RTD rail system had 170 light rail vehicles serving 47 miles 76 km of track In addition to local public transit intercity bus service is provided by Burlington Trailways Bustang Express Arrow and Greyhound Lines The westbound and eastbound California Zephyrs meet in the Glenwood Canyon Amtrak operates two passenger rail lines in Colorado the California Zephyr and Southwest Chief Colorado s contribution to world railroad history was forged principally by the Denver and Rio Grande Western Railroad which began in 1870 and wrote the book on mountain railroading In 1988 the Rio Grande was acquired but was merged into the Southern Pacific Railroad by their joint owner Philip Anschutz On September 11 1996 Anschutz sold the combined company to the Union Pacific Railroad creating the largest railroad network in the United States The Anschutz sale was partly in response to the earlier merger of Burlington Northern and Santa Fe which formed the large Burlington Northern and Santa Fe Railway BNSF Union Pacific s principal competitor in western U S railroading Both Union Pacific and BNSF have extensive freight operations in Colorado Colorado s freight railroad network consists of 2 688 miles of Class I trackage It is integral to the U S economy being a critical artery for the movement of energy agriculture mining and industrial commodities as well as general freight and manufactured products between the East and Midwest and the Pacific coast states 186 In August 2014 Colorado began to issue driver licenses to aliens not lawfully in the United States who lived in Colorado 187 In September 2014 KCNC reported that 524 non citizens were issued Colorado driver licenses that are normally issued to U S citizens living in Colorado 188 Education EditMain article List of colleges and universities in Colorado See also Table of Colorado school districts and Table of Colorado charter schools Colorado Christian University Colorado College Colorado Mesa University Colorado School of Mines Colorado State University Regis University The United States Air Force Academy The University of Colorado Boulder The University of Denver The first institution of higher education in the Colorado Territory was the Colorado Seminary opened on November 16 1864 by the Methodist Episcopal Church The seminary closed in 1867 but reopened in 1880 as the University of Denver In 1870 the Bishop George Maxwell Randall of the Episcopal Missionary District of Colorado and Parts Adjacent opened the first of what become the Colorado University Schools which would include the Territorial School of Mines opened in 1873 and sold to the Colorado Territory in 1874 These schools were initially run by the Episcopal Church 189 An 1861 territorial act called for the creation of a public university in Boulder though it would not be until 1876 that the University of Colorado was founded 190 The 1876 act also renamed Territorial School of Mines as the Colorado School of Mines 191 An 1870 territorial act created the Agricultural College of Colorado which opened in 1879 192 The college was renamed the Colorado State College of Agriculture and Mechanic Arts in 1935 and became Colorado State University in 1957 The first Catholic college in Colorado was the Jesuit Sacred Heart College which was founded in New Mexico in 1877 moved to Morrison in 1884 and to Denver in 1887 The college was renamed Regis College in 1921 and Regis University in 1991 193 On April 1 1924 armed students patrolled the campus after a burning cross was found the climax of tensions between Regis College and the locally powerful Ku Klux Klan 194 Following a 1950 assessment by the Service Academy Board it was determined that there was a need to supplement the U S Military and Naval Academies with a third school that would provide commissioned officers for the newly independent Air Force On April 1 1954 President Dwight Eisenhower signed a law that moved for the creation of a U S Air Force Academy 195 Later that year Colorado Springs was selected to host the new institution From its establishment in 1955 until the construction of appropriate facilities in Colorado Springs was completed and opened in 1958 the Air Force Academy operated out of Lowry Air Force Base in Denver With the opening of the Colorado Springs facility the cadets moved to the new campus though not in the full kit march that some urban and campus legends suggest 196 The first class of Space Force officers from the Air Force Academy commissioned on April 18 2020 197 Adams State University Aims Community College Arapahoe Community College Belleview Christian College amp Bible Seminary Colorado Christian University Colorado College Colorado Mesa University Colorado Mountain College Colorado Northwestern Community College Colorado School of Mines Colorado State University System Colorado State University Colorado State University Pueblo CSU Global Campus Colorado Technical University Community College of Aurora Community College of Denver Denver Seminary DeVry University Emily Griffith Opportunity School Fort Lewis College Front Range Community College Iliff School of Theology Johnson amp Wales University Lamar Community College Metropolitan State University of Denver Morgan Community College Naropa University Nazarene Bible College Northeastern Junior College Otero College Pikes Peak State College Pueblo Community College Red Rocks Community College Regis University Rocky Mountain College of Art and Design Rocky Vista University College of Osteopathic Medicine Trinidad State College United States Air Force Academy University of Colorado System University of Colorado Boulder University of Colorado Colorado Springs University of Colorado Denver Anschutz Medical Campus Auraria Campus University of Denver University of Northern Colorado Western Colorado UniversityMilitary installations Edit Fort Carson Peterson Space Force Base United States Air Force Academy The major military installations in Colorado include Buckley Space Force Base Air Reserve Personnel Center Fort Carson U S Army Pinon Canyon Maneuver Site Peterson Space Force Base Cheyenne Mountain Space Force Station Pueblo Chemical Depot U S Army Schriever Space Force Base United States Air Force AcademyFormer military posts in Colorado include Spanish Fort 1819 1821 Fort Massachusetts 1852 1858 Fort Garland 1858 1883 Camp Collins 1862 1870 Fort Logan 1887 1946 Fitzsimons Army Hospital 1918 1999 Denver Medical Depot 1925 1949 198 Lowry Air Force Base 1938 1994 Pueblo Army Air Base 1941 1948 Rocky Mountain Arsenal 1942 1992 Camp Hale 1942 1945 La Junta Army Air Field 1942 1946 Leadville Army Air Field 1943 1944 Colorado National Guard Armory 1913 1933 Government EditMain article Government of Colorado State government Edit State Executive OfficersOffice Name PartyGovernor Jared Polis DemocraticLieutenant Governor Dianne Primavera DemocraticSecretary of State Jena Griswold DemocraticAttorney General Phil Weiser DemocraticTreasurer Dave Young DemocraticLike the federal government and all other U S states Colorado s state constitution provides for three branches of government the legislative the executive and the judicial branches The Governor of Colorado heads the state s executive branch The current governor is Jared Polis a Democrat Colorado s other statewide elected executive officers are the Lieutenant Governor of Colorado elected on a ticket with the Governor Secretary of State of Colorado Colorado State Treasurer and Attorney General of Colorado all of whom serve four year terms The seven member Colorado Supreme Court is the state s highest court with seven justices The Colorado Court of Appeals with 22 judges sits in divisions of three judges each Colorado is divided into 22 judicial districts each of which has a district court and a county court with limited jurisdiction The state also has specialized water courts which sit in seven distinct divisions around the state and which decide matters relating to water rights and the use and administration of water The state legislative body is the Colorado General Assembly which is made up of two houses the House of Representatives and the Senate The House has 65 members and the Senate has 35 As of 2021 update the Democratic Party holds a 20 to 15 majority in the Senate and a 41 to 24 majority in the House Most Coloradans are native to other states nearly 60 according to the 2000 census 199 and this is illustrated by the fact that the state did not have a native born governor from 1975 when John David Vanderhoof left office until 2007 when Bill Ritter took office his election the previous year marked the first electoral victory for a native born Coloradan in a gubernatorial race since 1958 Vanderhoof had ascended from the Lieutenant Governorship when John Arthur Love was given a position in Richard Nixon s administration in 1973 Tax is collected by the Colorado Department of Revenue Politics Edit Main article Politics of Colorado See also Political party strength in Colorado and United States presidential elections in Colorado Colorado registered voters as of August 1 2022 update 200 Party Number of Voters PercentageUnaffiliated 1 658 017 44 92 Democratic 1 034 542 28 03 Republican 931 184 25 23 Libertarian 40 242 1 09 American Constitution 11 689 0 32 Green 8 385 0 23 Approval Voting 4 186 0 11 Unity 3 156 0 08 Total 3 691 041 100 United States presidential election results for Colorado 201 Year Republican Democratic Third partyNo No No 2020 1 364 607 41 90 1 804 352 55 40 88 021 2 70 2016 1 202 484 43 25 1 338 870 48 16 238 893 8 59 2012 1 185 243 46 09 1 323 102 51 45 63 501 2 47 2008 1 073 629 44 71 1 288 633 53 66 39 200 1 63 2004 1 101 256 51 69 1 001 725 47 02 27 344 1 28 2000 883 745 50 75 738 227 42 39 119 393 6 86 1996 691 848 45 80 671 152 44 43 147 704 9 78 1992 562 850 35 87 629 681 40 13 376 649 24 00 1988 728 177 53 06 621 453 45 28 22 764 1 66 1984 821 818 63 44 454 974 35 12 18 589 1 44 1980 652 264 55 07 367 973 31 07 164 178 13 86 1976 584 367 54 05 460 353 42 58 36 415 3 37 1972 597 189 62 61 329 980 34 59 26 715 2 80 1968 409 345 50 46 335 174 41 32 66 680 8 22 1964 296 767 38 19 476 024 61 27 4 195 0 54 1960 402 242 54 63 330 629 44 91 3 375 0 46 1956 394 479 59 49 263 997 39 81 4 598 0 69 1952 379 782 60 27 245 504 38 96 4 817 0 76 1948 239 714 46 52 267 288 51 88 8 235 1 60 1944 268 731 53 21 234 331 46 40 1 977 0 39 1940 279 576 50 92 265 554 48 37 3 874 0 71 1936 181 267 37 09 295 021 60 37 12 396 2 54 1932 189 617 41 43 250 877 54 81 17 202 3 76 1928 253 872 64 72 133 131 33 94 5 239 1 34 1924 195 171 57 02 75 238 21 98 71 851 20 99 1920 173 248 59 32 104 936 35 93 13 869 4 75 1916 102 308 34 75 178 816 60 74 13 251 4 50 1912 58 386 21 88 114 232 42 80 94 262 35 32 1908 123 693 46 88 126 644 48 00 13 521 5 12 1904 134 661 55 26 100 105 41 08 8 901 3 65 1900 93 072 42 04 122 733 55 43 5 603 2 53 1896 26 271 13 86 161 005 84 95 2 263 1 19 1892 38 620 41 13 0 0 00 55 271 58 87 1888 50 772 55 22 37 549 40 84 3 625 3 94 1884 36 084 54 25 27 723 41 68 2 712 4 08 1880 27 450 51 26 24 647 46 03 1 449 2 71 Colorado was once considered a swing state but has become a relatively safe blue state in both state and federal elections In presidential elections it had not been won until 2020 by double digits since 1984 and has backed the winning candidate in 9 of the last 11 elections Coloradans have elected 17 Democrats and 12 Republicans to the governorship in the last 100 years In presidential politics Colorado was considered a reliably Republican state during the post World War II era voting for the Democratic candidate only in 1948 1964 and 1992 However it became a competitive swing state in the 1990s Since the mid 2000s it has swung heavily to the Democrats voting for Barack Obama in 2008 and 2012 Hillary Clinton in 2016 and Joe Biden in 2020 Colorado politics has the contrast between conservative cities such as Colorado Springs and Grand Junction and liberal cities such as Boulder and Denver Democrats are strongest in metropolitan Denver the college towns of Fort Collins and Boulder southern Colorado including Pueblo and several western ski resort counties The Republicans are strongest in the Eastern Plains Colorado Springs Greeley and far Western Colorado near Grand Junction Colorado is represented by two United States Senators United States Senate Class 2 John Hickenlooper Democratic 2021 United States Senate Class 3 Michael Bennet Democratic 2009 Colorado is represented by seven Representatives to the United States House of Representatives Colorado s 1st congressional district Diana DeGette Democratic 1997 Colorado s 2nd congressional district Joe Neguse Democratic 2019 Colorado s 3rd congressional district Lauren Boebert Republican 2021 Colorado s 4th congressional district Ken Buck Republican 2015 Colorado s 5th congressional district Doug Lamborn Republican 2007 Colorado s 6th congressional district Jason Crow Democratic 2019 Colorado s 7th congressional district Ed Perlmutter Democratic 2007 In a 2020 study Colorado was ranked as the 7th easiest state for citizens to vote in 202 Significant initiatives and legislation enacted in Colorado Edit In 1881 Colorado voters approved a referendum that selected Denver as the state capital Colorado was the first state in the union to enact by voter referendum a law extending suffrage to women That initiative was approved by the state s voters on November 7 1893 203 On the November 8 1932 ballot Colorado approved the repeal of alcohol prohibition more than a year before the Twenty first Amendment to the United States Constitution was ratified Colorado has banned via C R S section 12 6 302 the sale of motor vehicles on Sunday since at least 1953 204 In 1972 Colorado voters rejected a referendum proposal to fund the 1976 Winter Olympics which had been scheduled to be held in the state Denver had been chosen by the International Olympic Committee as host city on May 12 1970 205 In 1992 by a margin of 53 to 47 percent Colorado voters approved an amendment to the state constitution Amendment 2 that would have prevented any city town or county in the state from taking any legislative executive or judicial action to recognize homosexuals or bisexuals as a protected class 206 In 1996 in a 6 3 ruling in Romer v Evans the U S Supreme Court found that preventing protected status based upon homosexuality or bisexuality did not satisfy the Equal Protection Clause 207 In 2006 voters passed Amendment 43 which banned gay marriage in Colorado 208 That initiative was nullified by the U S Supreme Court s 2015 decision in Obergefell v Hodges In 2012 voters amended the state constitution protecting the personal use of marijuana for adults establishing a framework to regulate cannabis like alcohol The first recreational marijuana shops in Colorado and by extension the United States opened their doors on January 1 2014 182 On May 29 2019 Governor Jared Polis signed House Bill 1124 immediately prohibiting law enforcement officials in Colorado from holding undocumented immigrants solely based on a request from U S Immigration and Customs Enforcement 209 Native American reservations Edit The Southern Ute Tribal Administration Building The Ute Mountain Ute Tribal Office Complex The two Native American reservations remaining in Colorado are Southern Ute Indian Reservation Southern Ute Indian Tribe 1873 Ute dialect Kapuuta wa Moghwachi Nuuchi u Ute Mountain Ute Indian Reservation Ute Mountain Ute Tribe 1940 Ute dialect Wʉgama Nuuchi The two abolished Indian reservations in Colorado were Cheyenne and Arapaho Indian Reservation 1851 1870 Ute Indian Reservation 1855 1873 Protected areas Edit Lowry Pueblo in Canyons of the Ancients National Monument Great Sand Dunes National Park and Preserve Spruce Tree House in Mesa Verde National Park Main article List of protected areas of Colorado Colorado is home to 4 national parks 9 national monuments 3 national historic sites 2 national recreation areas 4 national historic trails 1 national scenic trail 11 national forests 2 national grasslands 44 national wildernesses 3 national conservation areas 8 national wildlife refuges 3 national heritage areas 26 national historic landmarks 16 national natural landmarks more than 1 500 National Register of Historic Places 1 wild and scenic river 42 state parks 307 state wildlife areas 93 state natural areas 28 national recreation trails 6 regional trails and numerous other scenic historic and recreational areas The following are the 23 units of the National Park System in Colorado Amache National Historic Site Arapaho National Recreation Area l Bent s Old Fort National Historic Site Black Canyon of the Gunnison National Park Browns Canyon National Monument m California National Historic Trail n Camp Hale Continental Divide National Monument l Canyons of the Ancients National Monument o Chimney Rock National Monument l Colorado National Monument Continental Divide National Scenic Trail p q Curecanti National Recreation Area Dinosaur National Monument r Florissant Fossil Beds National Monument Great Sand Dunes National Park and Preserve Hovenweep National Monument s Mesa Verde National Park and UNESCO World Heritage Site Old Spanish National Historic Trail t Pony Express National Historic Trail u Rocky Mountain National Park Sand Creek Massacre National Historic Site Santa Fe National Historic Trail v Yucca House National Monument w See also Edit Geography portal History portal United States portal Colorado portalOutline of Colorado Index of Colorado related articles Bibliography of ColoradoFootnotes Edit Early explorers identified the Gunnison River in Colorado as the headwaters of the Colorado River The Grand River in Colorado was later tentatively identified as the primary headwaters of the river In 1916 E C LaRue the Chief Hydrologist of the United States Geological Survey identified the Green River in southwestern Wyoming as the primary headwaters of the Colorado River a b c United States Census Bureau estimates of county population as of July 1 2021 94 As a consolidated city and county the City and County of Denver is its own county seat 95 As a consolidated city and county the City and County of Broomfield is its own county seat 95 a b c United States Census Bureau estimates of municipal population as of July 1 2021 97 Persons of Hispanic or Latino origin are not distinguished between total and partial ancestry Several Air Force teams participate in other conferences or as independents in sports that the MW does not sponsor Boxing a men only sport that is not sanctioned by the NCAA competes as an independent Fencing a coeducational sport with men s and women s squads also competes as an independent Men s and women s gymnastics both compete in the Mountain Pacific Sports Federation Men s ice hockey competes in Atlantic Hockey Men s lacrosse competes in the ASUN Conference Rifle which at Air Force is a coeducational sport competes in the Patriot Rifle Conference Men s soccer and women s swimming amp diving compete in the Western Athletic Conference Men s wrestling competes in the Big 12 Conference Several Colorado teams participate in other conferences in sports that the Pac 12 does not sponsor Men s and women s indoor track amp field compete in the Mountain Pacific Sports Federation Skiing a coeducational sport with men s and women s squads competes in the Rocky Mountain Intercollegiate Ski Association Several Denver teams participate in other conferences in sports that The Summit League does not sponsor Women s gymnastics competes in the Big 12 Conference Men s ice hockey competes in the National Collegiate Hockey Conference Men s and women s lacrosse compete in the Big East Conference Skiing a coeducational sport with men s and women s squads competes in the Rocky Mountain Intercollegiate Ski Association Several Northern Colorado teams participate in other conferences in sports that the Big Sky does not sponsor Baseball competes in the Summit League Women s swimming amp diving competes in the Western Athletic Conference Men s wrestling competes in the Big 12 Conference Colorado College otherwise an NCAA Division III member has two Division I teams Men s ice hockey competes in the National Collegiate Hockey Conference and women s soccer competes in the Mountain West a b c Arapaho National Recreation Area Camp Hale Continental Divide National Monument and Chimney Rock National Monument are managed by the United States Forest Service United States Department of Agriculture Browns Canyon National Monument is jointly managed by the Bureau of Land Management United States Department of the Interior and the United States Forest Service United States Department of Agriculture The California National Historic Trail traverses ten U S states Missouri Kansas Nebraska Colorado Wyoming Idaho Utah Nevada Oregon and California Canyons of the Ancients National Monument is managed by the Bureau of Land Management United States Department of the Interior The Continental Divide National Scenic Trail traverses five U S states Montana Idaho Wyoming Colorado and New Mexico The Continental Divide National Scenic Trail is jointly managed by the United States Forest Service United States Department of Agriculture and the National Park Service and Bureau of Land Management United States Department of the Interior Dinosaur National Monument extends into the State of Utah Hovenweep National Monument extends into the State of Utah The Old Spanish National Historic Trail traverses six U S states New Mexico Colorado Utah Arizona Nevada and California The Pony Express National Historic Trail traverses eight U S states Missouri Kansas Nebraska Colorado Wyoming Utah Nevada and California The Santa Fe National Historic Trail traverses five U S states Missouri Kansas Colorado Oklahoma and New Mexico Yucca House National Monument remains undeveloped References Edit Lawmakers name Rocky Mountain High second state song 9news com Archive 9news com March 13 2006 Archived from the original on November 30 2015 Retrieved April 1 2016 a b c President of the United States of America August 1 1876 Proclamation of the Admission of Colorado to the Union php The American Presidency Project Retrieved November 15 2018 a b Mount Elbert NGS Data Sheet National Geodetic Survey National Oceanic and Atmospheric Administration United States Department of Commerce Retrieved October 20 2011 a b c Elevations and Distances in the United States United States Geological Survey 2001 Archived from the original on October 15 2011 Retrieved October 21 2011 a b Elevation adjusted to North American Vertical Datum of 1988 US Census Bureau QuickFacts Retrieved April 30 2022 Colorado Definition Merriam webster com August 13 2010 Retrieved June 5 2011 Colorado dictionary reference com Dictionary com LLC Retrieved August 17 2013 Clark Kyle June 27 2018 What s the right way to pronounce Colorado TV news magazine segment Contributor Rich Sandoval linguist at Metropolitan State University of Denver KUSA TV Archived from the original on November 23 2021 Retrieved August 4 2018 Sandoval found five pronunciations a b c d e f g h QuickFacts for Colorado United States Census Bureau Retrieved October 1 2022 State Name and Nickname Colorado Encyclopedia August 31 2017 Retrieved April 21 2021 a b c An Act to provide a temporary Government for the Territory of Colorado PDF Thirty sixth United States Congress February 28 1861 Archived PDF from the original on October 9 2022 Retrieved November 15 2018 Creative Services Archived from the original on February 19 2015 Retrieved February 5 2016 Quillen Ed March 18 2007 Coloradoan or Coloradan The Denver Post Denver Retrieved July 30 2010 What Climate Change means for Colorado PDF EPA 430 F 16 008 Environmental Protection Agency August 2016 Archived PDF from the original on October 9 2022 Fossilized Footprints United States National Park Service Retrieved August 6 2022 Ashley Strickland August 4 2022 Discovery in paleontologist s backyard reveals evidence of North America s early humans Cable News Network Retrieved August 6 2022 Genocide Wiped Out Native American Population Archived September 22 2010 at the Wayback Machine Discovery News September 20 2010 Multiple Property Documentation Form National Register of Historic PDF www nps gov Archived PDF from the original on October 9 2022 Report of the exploring expedition from Santa Fe New Mexico to the junction of the Grand and Green Rivers of the great Colorado of the West in 1859 under the command of Capt J N Macomb Corps of topographical engineers Volume 1 archive org Frazier Donald Shaw 1995 Blood amp treasure Confederate Empire in the Southwest 1st ed College Station Texas A amp M University Press ISBN 0585303304 OCLC 45732362 Forty third United States Congress March 3 1875 An Act to Enable the People of Colorado to Form a Constitution and State Government and for the Admission of the Said State into the Union on an Equal Footing with the Original States PDF Archived PDF from the original on October 9 2022 Retrieved November 15 2018 Shu Liu and Linda M Meyer Carnations and the Floriculture Industry Documenting the Cultivation and Marketing of Flowers in Colorado 2007 Kingman Dick 1986 A History Colorado Flower Growers and its People PDF Colorado Greenhouse Growers Association Inc Archived from the original PDF on March 4 2016 Retrieved March 13 2016 Rebchook John October 15 2015 Neighbors want historic designation for NW Denver home Philip Taft and Philip Ross American Labor Violence Its Causes Character and Outcome The History of Violence in America A Report to the National Commission on the Causes and Prevention of Violence ed Hugh Davis Graham and Ted Robert Gurr 1969 McGovern George Guttridge Leonard The Great Coalfield War Boston Houghton Mifflin Company 1972 88 89 p Devine Edward T Ryan John A Lapp John A 1921 The Denver Tramway Strike of 1920 The Denver Commission of Religious Forces and National Catholic Welfare Council p 33 Retrieved October 12 2020 Schreck Christopher The Strike of 1927 Colorado Fuel and Iron Culture and Industry in Southern Colorado Retrieved November 6 2019 Gerald Emerson Sherard 2006 Pre 1963 Colorado mining fatalities Report p 1 Retrieved November 12 2019 a b Louvaris Elenie August 20 2019 Ku Klux Klan in Colorado Colorado Encyclopedia Retrieved April 12 2021 Canterbury Carie April 15 2019 Ku Klux Klan once a Fremont County political powerhouse Canon City Daily Record Canon City CO Archived from the original on December 15 2020 Retrieved April 12 2021 Iversen Kristen June 12 2012 Under The Nuclear Shadow Of Colorado s Rocky Flats NPR The Chicano Movement s Denver Roots Run Deep Talk of the Nation National Public Radio June 30 2011 Retrieved March 25 2021 Simpson Kelly March 23 2012 Defining Chicanismo Since the 1969 Denver Youth Conference KCET Retrieved October 15 2022 It s Been 50 Years Since Colorado Passed This Groundbreaking Abortion Law Time April 25 2017 Retrieved February 9 2021 Follman Mark Andrews Becca Here s the terrifying new data on how Columbine spawned dozens of copycats Mother Jones Retrieved February 9 2021 How Colorado s gun laws have changed since the Aurora shooting The Guardian July 25 2015 Retrieved February 9 2021 Hern Elizabeth Ehern Ez March 22 2021 Boulder shooting Gunman kills 10 including police officer at King Soopers The Denver Post Retrieved March 23 2021 Coffield Alfred May 29 2020 USS Colorado Continues the Tradition of the Submarine Battle Flag Defense Visual Information Distribution Service Groton CT Retrieved May 10 2021 Colorado is NOT a perfect rectangle Fascinating Maps Archived from the original on June 17 2019 Retrieved November 15 2018 a b Colorado is a rectangle Think again The Big Think Inc October 31 2018 Retrieved November 15 2018 Shared Solution Four Corners NGS Survey Monument Data Sheet United States National Geodetic Survey May 7 2003 The official Four Corners Monument is located at 36 59 56 31591 N 109 2 42 62064 W a short distance east of the 37 N 109 02 48 W location Congress originally designated Colorado County Highpoints Retrieved February 27 2012 a b Doesken Nolan J Pielke Roger A Sr Bliss Odilia A P January 2003 Climate of Colorado Colorado Climate Center Department of Atmospheric Science Colorado State University Archived from the original on February 9 2009 Retrieved January 25 2009 Simpson Kevin April 8 2019 Colorado cattle rustling s colorful history helps modern brand inspectors keep up with a changing crime The Colorado Sun Retrieved March 27 2021 U S Forest Service Rocky Mountain Region 14ers Retrieved November 6 2009 U S Geological Survey Elevations and Distances Archived from the original on January 16 2008 Retrieved September 8 2006 Pikes Peak Colorado Peakbagger com Retrieved October 10 2009 Hansen Wallace R Chronic John Matelock John 1979 first published 1978 Climatography of the Front Range Urban Corridor and vicinity Colorado PDF Geological Survey Professional Paper 1019 Report Washington DC USG Printing Office Archived PDF from the original on October 9 2022 Retrieved March 21 2016 Climate of Colorado Wrcc dri edu Archived from the original on April 7 2016 Retrieved April 1 2016 a b Denver Colorado Travel Weather Averages Weatherbase Retrieved July 10 2013 Relocating to Greenhorn Valley Archived from the original on May 25 2017 Retrieved February 9 2017 a b Childs Samuel J R S Schumacher 2019 An Updated Severe Hail and Tornado Climatology for Eastern Colorado J Appl Meteorol Climatol 58 10 2273 2293 Bibcode 2019JApMC 58 2273C doi 10 1175 JAMC D 19 0098 1 Historic Denver Hailstorm Was Called Worst in American History July 11 2014 Hailstorm that hammered west metro Denver May 8 is costliest ever for Colorado May 23 2017 Slater Jane May 28 2008 Thursday s Tornado State s 4th Costliest Disaster KMGH Archived from the original on June 4 2008 Retrieved January 25 2009 Prendergast Alan April 29 2015 The 1965 Flood How Denver s Greatest Disaster Changed the City Denver s Consecutive 90 Degree Streaks National Weather Service Retrieved October 10 2009 A History of Drought PDF Archived PDF from the original on October 9 2022 Retrieved July 30 2010 People living in this part of Colorado are most at risk of climate change s adverse health effects study says The Denver Post April 23 2019 Zielinski Sarah The Colorado River Runs Dry Smithsonian Magazine Retrieved April 22 2020 On the Water Starved Colorado River Drought Is the New Normal Yale E360 Retrieved April 22 2020 Hood Grace As Climate Warms Colorado s Record Setting Hot Days Outnumber Cold Ones 3 1 Colorado Public Radio Retrieved April 22 2020 Over a quarter of Colorado is now officially in a drought The Denver Post October 5 2019 Retrieved April 22 2020 What Climate Change Means for Colorado PDF United States Environmental Protection Agency August 2016 Record Highest Temperatures by State PDF National Climatic Data Center January 1 2004 Archived from the original PDF on November 17 2001 Retrieved January 11 2007 Record Lowest Temperatures by State PDF National Climatic Data Center January 1 2004 Archived from the original PDF on November 17 2001 Retrieved January 11 2007 NOAA s National Weather Service National Climate W2 weather gov Retrieved April 1 2016 Recent Earthquakes in the U S U S Geological Survey January 17 2013 Archived from the original on January 17 2013 Largest Colorado quake since 1973 shakes homes USA Today August 23 2011 Retrieved August 23 2011 Four earthquakes rumble Colorado overnight OutThere Colorado OutThere Colorado August 24 2018 Retrieved September 10 2018 liz forster gazette com LIZ FORSTER 3 earthquakes reported overnight in Colorado Colorado Springs Gazette Retrieved September 10 2018 a b Purtell Joe November 18 2020 Wolves Are Coming Back to Colorado Now Comes the Tricky Part Sierra Sierra Club Retrieved March 25 2021 Bruce Finley January 22 2020 Polis welcomes wolves back to Colorado after wildlife officers confirm pack of 6 in Moffat County Denver Post As Colorado starts planning to bring back wolves Rio Blanco County s leaders say they won t allow it The Denver Post March 21 2021 Gillbert David January 12 2022 Colorado wildlife officials just legalized hazing wolves It came too late for a cowboy whose dog was killed The Colorado Sun Retrieved February 3 2022 Mitton Jeff December 9 2019 Introduced mountain goats have colonized much of the land above the trees Colorado Arts and Sciences Magazine Boulder CO University of Colorado Boulder Retrieved March 1 2021 CPW launches study to identify unknown disease in mountain goats Mount Evans CO Colorado Parks and Wildlife August 11 2021 Retrieved March 1 2021 McKee Spencer August 11 2020 Study launched to identify disease that s killing mountain goats in Colorado Out There Colorado Retrieved March 1 2021 Antelope Numbers Across 6 States GoHunt Archived from the original on March 12 2016 Retrieved March 24 2021 Brown Jennifer January 21 2019 Colorado s booming pronghorn population is running horns first into newly built neighborhoods The Colorado Sun Retrieved March 24 2021 Antilocapra americana IUCN Red List of Threatened Species 2016 2017 errata version of 2016 assessment doi 10 2305 IUCN UK 2016 3 RLTS T1677A50181848 en Retrieved March 25 2021 unknown url Southwestern Red Squirrel American Society of Mammalogists Retrieved February 3 2022 Sommariva Kelly February 6 2014 9 fascinating facts about pika in Colorado Denver KUSA Retrieved February 3 2022 Yellow Bellied Marmot Clear Creek County CO Clear Creek County Tourism Bureau Retrieved February 3 2022 Moose Reintroduction PDF Colorado Parks and Wildlife November 2013 Archived PDF from the original on October 9 2022 Retrieved February 3 2022 Cahill Caitlyn Rabbits Arapahoe County Government Retrieved February 3 2022 Brady Jeff December 7 2003 Coyote Hunt for Colorado National Public Radio Retrieved February 3 2022 Black tailed Prairie Dogs Jefferson County Government Retrieved February 3 2022 Swift Fox Conservation Team Colorado Parks and Wildlife Retrieved February 3 2022 Zimmer Amy January 6 2020 Colorado s Small Mammals Part III Mustelids Colorado Virtual Library Retrieved February 3 2022 Annual Estimates of the Resident Population for Counties in Colorado April 1 2020 to July 1 2021 CO EST2021 POP 08 United States Census Bureau United States Department of Commerce March 2022 Retrieved September 30 2022 a b c Active Colorado Municipalities State of Colorado Department of Local Affairs Division of Local Government Retrieved September 4 2022 State of Colorado Incorporated Places Current TAB20 Data as of January 1 2020 United States Census Bureau January 1 2020 Retrieved September 4 2022 Annual Estimates of the Resident Population for Incorporated Places in Colorado April 1 2020 to July 1 2021 SUB IP EST2021 POP 08 United States Census Bureau United States Department of Commerce May 2022 Retrieved September 30 2022 State of Colorado Census Designated Places BAS20 Data as of January 1 2020 United States Census Bureau Retrieved September 30 2022 Revised Delineations of Metropolitan Statistical Areas Micropolitan Statistical Areas and Combined Statistical Areas and Guidance on Uses of the Delineations of These Areas March 6 2020 0MB BULLETIN NO 20 01 PDF Office of Management and Budget Archived PDF from the original on October 9 2022 Retrieved November 11 2021 a href Template Cite web html title Template Cite web cite web a CS1 maint multiple names authors list link Race and Ethnicity in the United States 2010 Census and 2020 Census census gov United States Census Bureau August 12 2021 Retrieved September 26 2021 a b Gibson Campbell Jung Kay September 2002 Historical Census Statistics on Population Totals By Race 1790 to 1990 and By Hispanic Origin 1970 to 1990 For The United States Regions Divisions and States Population Division U S Census Bureau Archived from the original on July 25 2008 Retrieved April 17 2012 Population of Colorado Census 2010 and 2000 Interactive Map Demographics Statistics Quick Facts CensusViewer com Retrieved April 1 2016 2010 Census Data 2010 Census Data 2010 Census Census gov Retrieved April 1 2016 Profile of General Population and Housing Characteristics 2010 2010 Demographic Profile Data Factfinder2 census gov Archived from the original PDF on May 21 2019 Retrieved April 1 2016 Historical Census Statistics on Population Totals By Race 1790 to 1990 and By Hispanic Origin 1970 to 1990 For The United States Regions Divisions and States U S Census Bureau Archived from the original on December 24 2014 Retrieved January 3 2012 Colorado QuickFacts from the US Census Bureau Quickfacts census gov Archived from the original on February 19 2016 Retrieved April 1 2016 talking about Colorado in nada Elcastellano org June 30 2007 Retrieved July 30 2010 National Vital Statistics Reports Volume 57 Number 12 March 18 2009 PDF Centers for Disease Control and Prevention Archived PDF from the original on October 9 2022 Retrieved July 30 2010 Department of Public Health and Environment Cdphe state co us Retrieved April 1 2016 People of Colorado statistics StateMaster com June 15 2007 Archived from the original on April 21 2016 Retrieved April 1 2016 Losing ground PDF Adworks org Archived PDF from the original on October 9 2022 Retrieved April 1 2016 Exner Rich June 3 2012 Americans under age 1 now mostly minorities but not in Ohio Statistical Snapshot The Plain Dealer Births Final Data for 2013 Volume 64 Number 1 PDF National Vital Statistics Reports Centers for Disease Control and Prevention January 15 2015 Archived PDF from the original on October 9 2022 Retrieved August 8 2017 Births Final Data for 2014 Volume 64 Number 12 PDF National Vital Statistics Reports Centers for Disease Control and Prevention December 23 2015 Archived PDF from the original on October 9 2022 Retrieved August 8 2017 Births Final Data for 2015 Volume 66 Number 1 PDF National Vital Statistics Reports Centers for Disease Control and Prevention January 5 2017 Archived PDF from the original on October 9 2022 Retrieved August 8 2017 Nvsr67 01 pdf National Vital Statistics Reports PDF www cdc gov Centers for Disease Control and Prevention Archived PDF from the original on October 9 2022 a b Births Final Data for 2017 PDF National Vital Statistics Reports Centers for Disease Control and Prevention Archived PDF from the original on November 11 2018 Data PDF www cdc gov Centers for Disease Control and Prevention Archived PDF from the original on October 9 2022 Retrieved December 2 2019 Data PDF www cdc gov Centers for Disease Control and Prevention Archived PDF from the original on October 9 2022 Retrieved March 27 2021 Data PDF www cdc gov Archived PDF from the original on October 9 2022 Retrieved February 20 2022 Seaman Jessica March 22 2019 Colorado teen pregnancies dropped 20 percent near these clinics Now their funding is at risk The Denver Post Denver Retrieved May 21 2019 By increasing access to long term birth control such as intrauterine devices Colorado has reduced teen pregnancies by about 20 percent in zip codes near clinics that receive federal funding Statewide the birth rate for ages 15 and 19 dropped 59 in 2017 Brown Jennifer November 30 2017 IUD program leads to big decline in teen pregnancies abortions in Colorado The Denver Post Denver Retrieved May 21 2019 The steep drop in teen pregnancies and abortions in Colorado since 2009 is mainly due to one thing free low cost access to IUDs Thanks to a grant from billionaire Warren Buffett s family Colorado spent 28 million Languages Colorado www city data com Religious Landscape Study May 11 2015 Adkins Amy February 5 2014 Mississippi and Alabama Most Protestant States in U S Gallup com Retrieved April 1 2016 Religion in America U S Religious Data Demographics and Statistics Pew Research Center Religions pewforum org Retrieved April 1 2016 PRRI American Values Atlas ava prri org Retrieved September 17 2022 The Association of Religion Data Archives State Membership Report www thearda com Retrieved November 7 2013 Howlett William 1908 Denver The Catholic Encyclopedia NewAdvent org Retrieved March 24 2021 Your Colorado Church History Tour The Church of Jesus Christ of Latter day Saints in Colorado March 24 2020 Retrieved March 24 2021 Outdoor Equity Grant Bill to Support Outdoor Access for Underserved Youth oedit colorado gov Denver Colorado Office of Economic Development and International Trade Retrieved June 23 2021 Svaldi Aldo January 19 2020 Colorado is one of the healthiest states in the country but health outcomes vary widely by county The Denver Post Denver Retrieved April 13 2021 Percentage of Obese Adult Population Calorielab com Archived from the original GIF on June 12 2008 Retrieved April 1 2016 Adult Obesity Rates Fattest States 2010 CalorieLab s Annual Obesity Map State Obesity Rankings CalorieLab Health News amp Information Blog CalorieLab June 28 2010 Archived from the original on July 13 2012 Retrieved June 5 2011 Dwyer Lindgren Laura May 8 2017 Inequalities in Life Expectancy Among US Counties 1980 to 2014 JAMA Internal Medicine 177 7 1003 1011 doi 10 1001 jamainternmed 2017 0918 PMC 5543324 PMID 28492829 Quickfacts Colorado United States Census Bureau Archived from the original on July 26 2021 Retrieved September 20 2021 Analysis US Department of Commerce BEA Bureau of Economic Bureau of Economic Analysis www bea gov Archived from the original on December 30 2017 Retrieved April 24 2018 Median Annual Household Income The Henry J Kaiser Family Foundation September 22 2017 Retrieved October 11 2018 span, wikipedia, wiki, book, books, library,

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