List of Kentucky supplemental roads and rural secondary highways (600–699)

Kentucky supplemental roads and rural secondary highways are the lesser two of the four functional classes of highways constructed and maintained by the Kentucky Transportation Cabinet, the state-level agency that constructs and maintains highways in Kentucky. The agency splits its inventory of state highway mileage into four categories:^[1]

• The State Primary System includes Interstate Highways, Parkways, and other long-distance highways of statewide importance that connect the state's major cities, including much of the courses of Kentucky's U.S. Highways.
• The State Secondary System includes highways of regional importance that connect the state's smaller urban centers, including those county seats not served by the state primary system.
• The Rural Secondary System includes highways of local importance, such as farm-to-market roads and urban collectors.
• Supplemental Roads are the set of highways not in the first three systems, including frontage roads, bypassed portions of other state highways, and rural roads that only serve their immediate area.

Kentucky supplemental roads and rural secondary highways (600–699)
Highway markers for KY 600 and KY 699
Highway names
Interstates	Interstate nn (I-nn)
US Highways	U.S. Highway nn (US nn)
State	KY nn
System links
Kentucky State Highway System Interstate US State Parkways
Supplemental/Rural Secondary 1–199 200–299 300–399 400–499 500–599 600–699 700–799 800–899 900–999 1000–1499 1500–1999 2000–2499 2500–2999 3000–3499 3500–6999

The same-numbered highway can comprise sections of road under different categories. This list contains descriptions of Supplemental Roads and highways in the Rural Secondary System numbered 600 to 699 that do not have portions within the State Primary and State Secondary systems.

Kentucky Route 600

Kentucky Route 600
Location	near Clifty
Length	2.728 mi^[2] (4.390 km)

Kentucky Route 600 is a 2.728-mile-long (4.390 km) state highway in Muhlenberg County that runs from Kentucky Route 831 to Kentucky Route 171 northwest of Clifty.

Major intersections

The entire route is in Muhlenberg County.

Location	mi^[2]	km	Destinations	Notes
​	0.000	0.000	KY 831	Southern terminus
​	2.728	4.390	KY 171	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 601

Kentucky Route 601
Location	Greenville-near Graham
Length	2.728 mi^[2] (4.390 km)

Kentucky Route 601 is a 2.728-mile-long (4.390 km) state highway in Muhlenberg County that runs from Kentucky Route 181 on the western Greenville city line to Kentucky Route 175 north of Graham via New Cypress.

Major intersections

The entire route is in Muhlenberg County.

Location	mi^[2]	km	Destinations	Notes
Greenville	0.000	0.000	KY 181 (Luzerne Drive)	Southern terminus
​	3.153	5.074	KY 2690 west (New Cypress Road) / New Cypress Road	Eastern terminus of KY 2690
​	6.766	10.889	KY 175	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 602

Kentucky Route 602
Location	Central City
Length	0.690 mi^[3] (1,110 m)

Kentucky Route 602 is a 0.690-mile-long (1.110 km) supplemental road in Central City in central Muhlenberg County. The highway begins at KY 277 (River Road) in the north of downtown. KY 602 heads north along an unnamed street and meets the western end of KY 3038 (Prison Road) before reaching its north end at KY 1031 (Second Street).^[1][3][4]

Major intersections

The entire route is in Central City, Muhlenberg County.

mi^[2]	km	Destinations	Notes
0.000	0.000	KY 277 (River Road)	Southern terminus
0.651	1.048	KY 3038 east (Peabody Road)	Western terminus of KY 3038
0.690	1.110	KY 1031 (North Second Street)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 603

Kentucky Route 603
Location	Owensboro
Length	1.701 mi^[5] (2.737 km)

Kentucky Route 603 is a 1.701-mile-long (2.737 km) supplemental road in Owensboro in central Daviess County. The highway begins just south of a diamond interchange with the Wendell Ford Expressway, which carries US 60 and US 231 around the south side of Owensboro; the road continues south as Pleasant Valley Road No. 1. KY 603 passes through an S-curve and expands to a four-lane divided highway. The highway crosses over a CSX rail line and reaches its northern terminus at Fourth Street; this intersection also serves as the western terminus of KY 144.^[1][5][6]

Major intersections

The entire route is in Daviess County.

Location	mi^[2]	km	Destinations	Notes
​	0.000	0.000	Pleasant Valley Road No. 1	Southern terminus
​	0.211– 0.265	0.340– 0.426	US 60 / US 231 (Wendell H. Ford Expressway) – Hawesville, Henderson	US 60/US 231 exit 19
Owensboro	1.701	2.737	KY 144 east (East Fourth Street) / East Fourth Street	Northern terminus; western terminus of KY 144
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 604

Kentucky Route 604
Location	Central City
Length	0.975 mi^[3] (1,569 m)

Kentucky Route 604 is a 0.975-mile-long (1.569 km) supplemental road in Central City in central Muhlenberg County. The highway begins at US 431 (Second Street) just south of the U.S. Highway's four–loop ramp interchange with the Western Kentucky Parkway on the eastern edge of the city. KY 604 heads east and then turns north at Youngstown Road. The highway crosses over the parkway before reaching its north end at an acute intersection with US 62 (Everly Brothers Boulevard).^[1][3][4]

Major intersections

The entire route is in Central City, Muhlenberg County.

mi^[2]	km	Destinations	Notes
0.000	0.000	US 431 / KY 70	Southern terminus
0.975	1.569	US 62 (Everly Brothers Boulevard)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 605

Kentucky Route 605
Location	Manton-Bardstown
Length	12.781 mi^[2] (20.569 km)

Kentucky Route 605 is a 12.781-mile-long (20.569 km) state highway that runs from Kentucky Route 1183 and Manton Road at Manton to U.S. Route 62 in far northeastern Bardstown via Botland and Woodlawn.

Major intersections

County	Location	mi^[2]	km	Destinations	Notes
Washington	Manton	0.000	0.000	KY 1183 (Cissellville Road) / Manton Road	Southern terminus; continues as Manton Road beyond KY 1183
Nelson	Botland	4.940	7.950	US 150 east (Springfield Road)	South end of US 150 overlap
	​	5.814	9.357	US 150 west (Springfield Road)	North end of US 150 overlap
	Bardstown	12.781	20.569	US 62 (Bloomfield Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 606

Kentucky Route 606
Location	near Barterville-near Ellisville
Length	2.321 mi^[2] (3.735 km)

Kentucky Route 606 is a 2.321-mile-long (3.735 km) state highway in Nicholas County that runs from Bald Hill Road northeast of Barterville to U.S. Route 68 southwest of Ellisville.

Major intersections

The entire route is in Nicholas County.

Location	mi^[2]	km	Destinations	Notes
​	0.000	0.000	Bald Hill Road	Western terminus
​	2.321	3.735	US 68 (Maysville Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 607

Kentucky Route 607
Location	near Monterey–near Corinth
Length	17.421 mi^[7] (28.036 km)

Kentucky Route 607 is a 17.421-mile-long (28.036 km) rural secondary highway in southern Owen County. The highway begins at US 127 south of Monterey. KY 607 heads east along New Columbus Road, which immediately crosses Cedar Creek and has a hairpin at New. The route intersects KY 227 (Georgetown Road) west of Fairbanks, east of which the highway crosses Caney Creek. KY 607 meets the southern end of KY 1883 (Slatin Road) and meets the eastern end of KY 2018 (Swope Natlee Road) at Natlee, where the route crosses Eagle Creek. The highway continues through New Columbus to its eastern terminus at KY 330 (Owenton Road) at the Owen–Grant county line.^[1][7][8]

Major intersections

The entire route is in Owen County.

Location	mi^[7]	km	Destinations	Notes
​	0.000	0.000	US 127 / Frank Clark Road	Western terminus; continues as Frank Clark Road beyond US 127
​	7.667	12.339	KY 227 (Georgetown Road)
​	11.449	18.425	KY 1883 north (Slatin Road)	Southern terminus of KY 1883
​	13.391	21.551	KY 2018 north	Southern terminus of KY 2018
​	17.421	28.036	KY 330 (Owenton Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 608

Kentucky Route 608
Location	near Natlee-near Stonewall
Length	4.067 mi^[2] (6.545 km)

Kentucky Route 608 is a 4.067-mile-long (6.545 km) state highway that runs from Frogtown Road at the Owen-Scott county line southeast of Natlee to U.S. Route 25 south of Stonewall.

Major intersections

County	Location	mi^[2]	km	Destinations	Notes
Owen–Scott county line	​	0.000	0.000	Frogtown Road	Western terminus; continues as Frogtown Road beyond county line
Scott	​	4.067	6.545	US 25 (Cincinnati Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 609

Kentucky Route 609
Location	Concord-near Meridian
Length	6.220 mi^[2] (10.010 km)

Kentucky Route 609 is a 6.220-mile-long (10.010 km) state highway in Pendleton County that runs from Kentucky Route 159 at Concord to Kentucky Route 177 east of Meridian.

Major intersections

The entire route is in Pendleton County.

Location	mi^[2]	km	Destinations	Notes
Concord	0.000	0.000	KY 159	Southern terminus
​	6.220	10.010	KY 177	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 611

Kentucky Route 611
Location	Lookout-near Jonancy
Length	5.993 mi^[2] (9.645 km)

Kentucky Route 611 is a 5.993-mile-long (9.645 km) state highway in Pike County that runs from Kentucky Route 195 at Lookout to U.S. Routes 23 and 119 east of Jonancy via Lookout.

Major intersections

The entire route is in Pike County.

Location	mi^[2]	km	Destinations	Notes
Lookout	0.000	0.000	KY 195 (Marrowbone Creek Road)	Southern terminus
​	5.993	9.645	US 23 / US 119	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 612

Kentucky Route 612
Location	near Rural-near Turkey Creek
Length	8.636 mi^[2] (13.898 km)

Kentucky Route 612 is a 8.636-mile-long (13.898 km) state highway in northeastern Pike County that runs from Kentucky Route 468 south of Rural to Kentucky Route 292 northeast of Turkey Creek via Turkey Creek.

Major intersections

The entire route is in Pike County.

Location	mi^[2]	km	Destinations	Notes
​	0.000	0.000	KY 468 (Big Creek Road)	Western terminus
​	8.636	13.898	KY 292 (Williamson Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 613

Kentucky Route 613
Location	Bowen-near Old Lombard
Length	9.680 mi^[2] (15.578 km)

Kentucky Route 613 is a 9.680-mile-long (15.578 km) state highway in eastern Powell County that runs from Kentucky Routes 11 and 15 at Bowen to Forestry Road No. 23 at the Menifee County line northeast of Old Lombard.

Major intersections

The entire route is in Powell County.

Location	mi^[2]	km	Destinations	Notes
Bowen	0.000	0.000	KY 11 / KY 15 (Campton Road)	Western terminus
​	0.580	0.933	KY 599 north (North Fork Road)	Southern terminus of KY 599
​	9.680	15.578	Forestry Road No. 23	Eastern terminus; Menifee County line; continues as Forestry Road No. 23 beyond county line
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 615

Kentucky Route 615
Location	Morris-near Bowen
Length	10.119 mi^[2] (16.285 km)

Kentucky Route 615 is a 10.119-mile-long (16.285 km) state highway in central Powell County that runs from Kentucky Route 213 at Morris to Kentucky Route 599 northwest of Bowen.

Major intersections

The entire route is in Powell County.

Location	mi^[2]	km	Destinations	Notes
Morris	0.000	0.000	KY 213 (Morris Creek Road)	Western terminus
​	4.122	6.634	KY 213 north (Morris Creek Road)	West end of KY 213 overlap
​	4.512	7.261	KY 213 south (Morris Creek Road)	East end of KY 213 overlap
​	5.536	8.909	KY 1695 north (Hatchers Creek Road)	Southern terminus of KY 1695
​	8.273	13.314	KY 1184 south (Cane Creek Road) to KY 11 / KY 15	Northern terminus of KY 1184
​	10.119	16.285	KY 599 (North Fork Road / Cane Creek Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 616

Kentucky Route 616
Location	near Fairview-near Germantown
Length	10.119 mi^[2] (16.285 km)

Kentucky Route 616 is a 16.009-mile-long (25.764 km) state highway that runs from Kentucky Routes 1029 and 2505 northwest of Fairview to Kentucky Route 875 southwest of Germantown via Abigail.

Major intersections

County	Location	mi^[2]	km	Destinations	Notes
Robertson	​	0.000	0.000	KY 1029 (Old Blue Lick Road) / KY 2505 south (Mt. Pleasant Road)	Southern terminus; northern terminus of KY 2505; continues as KY 2505 beyond KY 1029
	Mount Olivet	6.514	10.483	US 62 east (Sardis Road)	South end of US 62 overlap
		6.641	10.688	US 62 west (Sardis Road)	North end of US 62 overlap
Mason	No major junctions
Bracken	No major junctions
Mason	No major junctions
Bracken	​	16.009	25.764	KY 875 (Bridgeville Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 617

Kentucky Route 617
Location	near Kentontown-near Piqua
Length	10.119 mi^[2] (16.285 km)

Kentucky Route 617 is a 5.363-mile-long (8.631 km) state highway in southwestern Robertson County that runs from U.S. Route 62 east of Kentontown to Kentucky Route 165 and Piqua Lane northwest of Piqua.

Major intersections

The entire route is in Robertson County.

Location	mi^[2]	km	Destinations	Notes
​	0.000	0.000	US 62 (Kentontown Road)	Western terminus
​	1.032	1.661	KY 1476 east (Thomas Pike)	Western terminus of KY 1476
​	5.363	8.631	KY 165 / Piqua Lane	Eastern terminus; continues as Piqua Lane beyond KY 165
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 618

Kentucky Route 618
Location	Broughtentown-near Spiro
Length	10.708 mi^[2] (17.233 km)

Kentucky Route 618 is a 10.708-mile-long (17.233 km) state highway that runs from Kentucky Route 1781 at Broughtentown to Kentucky Route 1250 south of Spiro via Dog Walk and Quail.

Major intersections

County	Location	mi^[2]	km	Destinations	Notes
Lincoln	Broughtentown	0.000	0.000	KY 1781	Western terminus
	​	1.937	3.117	KY 39 north	West end of KY 39 overlap
	Dog Walk	2.519	4.054	KY 39 south	East end of KY 39 overlap
Rockcastle	​	3.714	5.977	KY 1650 east (Ottawa Church Road)	Western terminus of KY 1650
	​	7.105	11.434	KY 328 west (Bee Lick Road)	Eastern terminus of KY 328
	Quail	7.457	12.001	KY 70 (Old Somerset Pike)
	​	10.708	17.233	KY 1250 (Spiro Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 619

Kentucky Route 619
Location	near Montpelier
Length	19.045 mi^[2] (30.650 km)

Kentucky Route 619 is a 19.045-mile-long (30.650 km) state highway in Russell County that runs from Kentucky Route 92 southeast of Montpelier to Kentucky Route 379 in downtown Russell Springs via Rose Crossroads and Jamestown.

Major intersections

The entire route is in Russell County.

Location	mi^[2]	km	Destinations	Notes
​	0.000	0.000	KY 92	Western terminus
​	2.563	4.125	KY 832 east	Western terminus of KY 832
​	3.577	5.757	KY 379 north / KY 3281 south (Warriner Ridge Road)	West end of KY 379 overlap; northern terminus of KY 3281
​	4.838	7.786	KY 379 south	East end of KY 379 overlap
​	6.329	10.186	KY 3281 (Warriner Ridge Road)
​	9.473	15.245	US 127
Jamestown	10.179	16.382	US 127 Bus. south (West Cumberland Avenue) / Sunset Drive	West end of US 127 Bus. overlap
	10.800– 10.814	17.381– 17.403	US 127 Bus. north (North Main Street) / KY 92 (South Main Street)	East end of US 127 Bus. overlap
​	13.085	21.058	KY 1680 south / Nelson Mill Road	Northern terminus of KY 1680
Russell Springs	18.110	29.145	US 127
	18.842	30.323	Lakeway Drive (KY 3017)
	19.045	30.650	KY 379 (Main Street)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 621

Kentucky Route 621
Location	near Auburn-near Franklin
Length	9.269 mi^[9] (14.917 km)

Kentucky Route 621 is a 9.269-mile-long (14.917 km) state highway in Simpson County that runs from Kentucky Route 103 southeast of Auburn to U.S. Route 31W north of Franklin.

Major intersections

The entire route is in Simpson County.

Location	mi^[9]	km	Destinations	Notes
​	0.000	0.000	KY 103 (Middleton Road)	Western terminus
​	3.003	4.833	KY 73 south (Morgantown Road)	West end of KY 73 overlap
​	3.804	6.122	KY 73 north (Morgantown Road)	East end of KY 73 overlap
​	9.269	14.917	US 31W (Bowling Green Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 623

Kentucky Route 623
Location	near Fairfield-near Waterford
Length	6.087 mi^[10] (9.796 km)

Kentucky Route 623 is a 6.087-mile-long (9.796 km) rural secondary highway in southwestern Spencer County. The highway begins at KY 48 (Highgrove Road) just north of the East Fork of Cox Creek, which forms the Spencer–Nelson county line. KY 623 heads north as Lilly Pike, which crosses the Salt River on its way to its north end at KY 44 (Mount Washington Road) east of Waterford.^[1][10][11]

Major intersections

The entire route is in Spencer County.

Location	mi^[10]	km	Destinations	Notes
​	0.000	0.000	KY 48 (Highgrove Road)	Southern terminus
​	6.087	9.796	KY 44 (Mt. Washington Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 624

Kentucky Route 624
Location	Cerulean-near Bainbridge
Length	5.064 mi^[12]^[13] (8.150 km)

Kentucky Route 624 is a 5.064-mile-long (8.150 km) state highway in far northeastern Trigg County and far northwestern Christian County that runs from Kentucky Routes 124 and 126 in Cerulean to Kentucky Route 91 and Old Princeton Road southeast of Bainbridge.

Major intersections

County	Location	mi^[12]^[13]	km	Destinations	Notes
Trigg	Cerulean	0.000	0.000	KY 124 / KY 126 (Main Street)	Western terminus
Christian	​	5.064	8.150	KY 91 (Princeton Road) / Old Princeton Road	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 625

Kentucky Route 625
Location	Bedford-Milton
Length	12.215 mi^[14] (19.658 km)

Kentucky Route 625 is a 5.064-mile-long (8.150 km) state highway in western Trimble County that runs to and from U.S. Route 421 via Mount Pleasant and Trout.Between Corn Creek Road and US-421 this route is closed to Trucks due to the tight switchbacks and narrow nature of the road.

Major intersections

The entire route is in Trimble County.

Location	mi^[14]	km	Destinations	Notes
Bedford city line	0.000	0.000	US 421 (Main Street)	Southern terminus
​	3.809	6.130	KY 2869 west (Conner Ridge Road)	Eastern terminus of KY 2869
Trout	6.209	9.992	KY 1838 south (Corn Creek Road)	Northern terminus of KY 1838
​	11.990	19.296	KY 1256 south (Liberty Road)	Northern terminus of KY 1256
Milton	12.215	19.658	US 421	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 626

Kentucky Route 626
Location	Boston–Rockland
Length	17.954 mi^[15]^[16] (28.894 km)

Kentucky Route 626 is a 17.954-mile-long (28.894 km) rural secondary highway in southeastern Butler County and western Warren County. The L-shaped highway begins at a three-legged intersection with KY 1153, which heads west as Berry's Lick Road and north as Sandy Creek Road. KY 626 heads east along Berry's Lick Road through Turnertown, also known as Berry's Lick. The highway crosses Flat Rock Branch of Muddy Creek and intersects KY 79 (Russellville Road) at Davis Crossroads. KY 626 crosses Neils Creek west of Sharer, where the route has a brief concurrency with KY 1083 (Sugar Grove Road). The highway crosses the Butler–Warren county line and continues east on Jackson Bridge Road. KY 626 crosses the Gasper River and turns north at its junction with KY 2632 (Hammet Hill Road). The highway joins US 231 (Morgantown Road) to cross back over the Gasper River and turns north onto Highland Church Road at Hadley. KY 626 crosses William H. Natcher Parkway; on either side of the parkway, the route meets the eastern ends of a pair of frontage roads, KY 6140 (Frontage Road) and KY 6139 (Clifty Creek Frontage Road) on the north. The highway reaches its eastern terminus at KY 1435 (Barren River Road) at Rockland.^{[1][15][16][17][18]}

Major intersections

County	Location	mi^[15]^[16]	km	Destinations	Notes
Butler	​	0.000	0.000	KY 1153 (Berry's Lick Road / Sandy Creek Road)	Western terminus
	Davis Crossroads	3.380	5.440	KY 79 (Russellville Road)
	​	7.878	12.678	KY 1083 south (Sugar Grove Road)	West end of KY 1083 overlap
	​	8.050	12.955	KY 1083 north (Sugar Grove Road)	East end of KY 1083 overlap
Warren	​	12.422	19.991	KY 2632 east (Hammett Hill Road)	Western terminus of KY 2632
	​	14.465	23.279	US 231 south (Morgantown Road)	West end of US 231 overlap
	​	15.538	25.006	US 231 north (Morgantown Road) / Hadley School Road	East end of US 231 overlap
	​	16.044	25.820	KY 6139 north (Clifty Hollow Road)	Southern terminus of KY 6139
	​	17.954	28.894	KY 1435 (Barren River Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 628

Kentucky Route 628
Location	near Ayers-Pleasant View
Length	5.225 mi^[19] (8.409 km)

Kentucky Route 628 is a 5.225-mile-long (8.409 km) state highway in southwestern Whitley County that runs from a dead end along Wolf Creek northeast of Ayres to U.S. Route 25W and Stringtown Road in Pleasant View.

Major intersections

The entire route is in Whitley County.

Location	mi^[19]	km	Destinations	Notes
​	0.000	0.000	Dead end	Western terminus
​	4.351	7.002	KY 2996 south (Wolf Creek River Road)	Northern terminus of KY 2996
Pleasant View	5.225	8.409	US 25W / Stringtown Road	Eastern terminus; continues as Stringtown Road beyond US 25W
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 629

Kentucky Route 629
Location	near Fordsville
Length	19.653 mi^[20]^[21] (31.628 km)
Existed	1987–present

Kentucky Route 629 is a 19.653-mile-long (31.628 km) state highway in far eastern Ohio County and western Breckinridge County that runs from Kentucky Route 54 southeast of Fordsville to Kentucky Route 992 southeast of Mattingly via Rockvale.

Major intersections

County	Location	mi^[20]^[21]	km	Destinations	Notes
Ohio	​	0.000	0.000	KY 54	Southern terminus
Breckinridge	​	14.016	22.557	KY 261
	​	19.653	31.628	KY 992	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 630

Kentucky Route 630
Location	near Manitou-Dixon
Length	15.081 mi^[22]^[23] (24.271 km)
Existed	1987–present

Kentucky Route 630 is a 15.081-mile-long (24.271 km) state highway in northern Hopkins County and south central Webster County that runs from Kentucky Route 262 and John Hardy Road south of Manitou to Kentucky Route 132 on the eastern Dixon city line via Manitou and Vanderburg.

Major intersections

County	Location	mi^[22]^[23]	km	Destinations	Notes
Hopkins	​	0.000	0.000	KY 262 east / John Hardy Road	Southern terminus; western terminus of KY 262
	​	0.592	0.953	KY 1034 (Rose Creek Road)
	Manitou	2.040	3.283	US 41 Alt. south (Nebo Road)	South end of US 41 Alt. overlap
		2.250	3.621	US 41 Alt. north (Nebo Road)	North end of US 41 Alt. overlap
Webster	​	9.713	15.632	KY 120 east	South end of KY 120 overlap
	​	10.046	16.167	KY 120 west	North end of KY 120 overlap
	Dixon city line	15.081	24.271	KY 132 (Leiper Street)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 631

Kentucky Route 631
Location	near Short Creek
Length	7.758 mi^[24] (12.485 km)
Existed	1993^[25]–present

Kentucky Route 631 is a 15.081-mile-long (24.271 km) rural secondary state highway in Grayson County that runs to and from Kentucky Route 54 east and southeast of Short Creek via Duff.

Kentucky Route 633

Kentucky Route 633
Location	near Coburg
Length	1.689 mi^[26] (2.718 km)

Kentucky Route 633 is a 1.689-mile-long (2.718 km) supplemental state highway in far northwestern Adair County that runs from Cane Valley Road at the Taylor County line to Kentucky Route 55 and Cane Valley Church Road south of Coburg.

Kentucky Route 634

Kentucky Route 634
Location	near Spurlington-near Jessietown
Length	2.808 mi^[27]^[28] (4.519 km)

Kentucky Route 634 is a 2.808-mile-long (4.519 km) rural secondary state highway in far northern Taylor County and far southern Marion County that runs from Kentucky Route 744 northwest of Spurlington to Kentucky Route 289 southwest of Jessietown.

Kentucky Route 636

Kentucky Route 636
Location	near Mount Eden–near Harrisonville
Length	9.033 mi^[29]^[10] (14.537 km)

Kentucky Route 636 is a 9.033-mile-long (14.537 km) rural secondary highway in northeastern Spencer County and southeastern Shelby County. The highway begins at KY 248 (Briar Ridge Road) east of Taylorsville Lake. KY 636 heads north along Van Buren Road, which crosses Little Beech Creek on its way to Mount Eden, which sits on the Spencer–Shelby county line. The highway meets the eastern end of KY 1795 (Mill Road) on the Spencer County side and intersects KY 44 (Mount Eden Road) on the Shelby County side. KY 636 continues northeast as Back Creek Road, which crosses and briefly parallels another Little Beech Creek. The highway passes through Junte before reaching its northern terminus at KY 395 (Waddy Road) west of Harrisonville.^{[1][29][10][30][11]}

Major intersections

County	Location	mi^[10]^[29]	km	Destinations	Notes
Spencer	​	0.000	0.000	KY 248 (Briar Ridge Road) / Van Buren Road	Southern terminus; continues as Van Buren Road beyond KY 248
	Mount Eden	3.566	5.739	KY 1795 west (Mill Road) / Marvin Nethery Road	Eastern terminus of KY 1795
Shelby		3.620	5.826	KY 44 / KY 53 (Mt Eden Road)
	​	9.033	14.537	KY 395 (Waddy Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 638

Kentucky Route 638
Location	London-Manchester
Length	27.729 mi^[31]^[32] (44.625 km)

Kentucky Route 638 is a 27.729-mile-long (44.625 km) rural secondary highway in northeastern Laurel County and western Clay County that runs from Kentucky Route 80 in eastern London to U.S. Route 421 and Kentucky Route 11 in far northern Manchester via McWhorter, Larue, Fogertown, and Grace.

Major intersections

County	Location	mi^[31]^[32]	km	Destinations	Notes
Laurel	London	0.000	0.000	KY 80 (East Fourth Street)	Western terminus
		0.766	1.233	Hal Rogers Parkway – London, Hazard
	​	3.252	5.234	KY 586 south (Old Salem Road)	Northern terminus of KY 586
	​	8.615	13.864	KY 578 west (McWhorter-Victory Road)	West end of KY 578 overlap
	McWhorter	9.449	15.207	KY 578 east (Terrells Creek Road)	East end of KY 578 overlap
	​	10.872	17.497	KY 3435 south (Langnau Road)	Northern terminus of KY 3435
	​	13.682	22.019	KY 472 west (Johnson Road)	West end of KY 472 overlap
	​	13.825	22.249	KY 472 east (Johnson Road)	East end of KY 472 overlap
Clay	Fogertown	17.310	27.858	KY 472 west	West end of KY 472 overlap
	​	17.702	28.489	KY 472 east	East end of KY 472 overlap
	​	21.359	34.374	KY 3476 south (Grayfork Road)	Northern terminus of KY 3476
	​	24.966	40.179	KY 3473 east (Island Creek-Sizemore Road)	Western terminus of KY 3473
	Manchester	27.729	44.625	US 421 / KY 11 (Richmond Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 639

Kentucky Route 639
Location	near Shipley-near Snow

Kentucky Route 639 is a 27.729-mile-long (44.625 km) rural secondary highway in western Clinton County that runs from Kentucky Route 553 west of Shipley to Kentucky Route 734 northwest of Snow via Wago.

Major intersections

The entire route is in Clinton County.

Location	mi^[33]	km	Destinations	Notes
​	0.000	0.000	KY 553 (Wisdom Dock Road)	Southern terminus
​	4.958	7.979	KY 1590 (Burkesville Road)
​	8.072	12.991	KY 90
​	8.468	13.628	US 127
​	9.428	15.173	KY 1553 north	Southern terminus of KY 1553
​	9.714	15.633	KY 734	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 640

Kentucky Route 640
Location	Summer Shade–Knob Lick
Length	16.723 mi^[34] (26.913 km)

Kentucky Route 640 is a 16.723-mile-long (26.913 km) rural secondary highway in western Metcalfe County. The highway begins at KY 90 (Summer Shade Road) at Summer Shade. KY 640 heads north along Randolph Summer Shade Road. The highway curves west and crossing Falling Timber Creek and meets the eastern end of KY 1330 (Kino Road) very close to the Metcalfe–Barren county line. KY 640 continues northeast to Randolph, where the route turns north at the north terminus of KY 2387 (Randolph Goodluck Road) and meets the west end of KY 861 (Randolph Road). KY 640 follows Wisdom Road north to its intersection with KY 3234 (Old Glasgow Road) just south of the route's underpass of the Cumberland Parkway. The highway continues as Wisdom Knob Lick Road through an intersection with US 68 (Glasgow Road) at Wisdom to its northern terminus at KY 70 (Sulphur Well Knob Lick Road) west of Knob Lick.^[1][34][35]

Major intersections

The entire route is in Metcalfe County.

Location	mi^[34]	km	Destinations	Notes
Summer Shade	0.000	0.000	KY 90 (Summer Shade Road)	Southern terminus
​	5.477	8.814	KY 1330 west (Kino Road)	Eastern terminus of KY 1330
Randolph	8.546	13.753	KY 2387 south (Randolph-Goodluck Road)	Northern terminus of KY 2387
​	8.678	13.966	KY 861 east (Randolph Road)	Western terminus of KY 861
​	10.615	17.083	KY 3234 east (Old Glasgow Road)	Western terminus of KY 3234
Wisdom	11.053	17.788	US 68 / KY 80 (Glasgow Road)
​	16.723	26.913	KY 70 (Sulphur Well-Knob Lick Road) / KY 2435 west (McCandless Corner Road)	Northern terminus; eastern terminus of KY 2435; continues as KY 2435 beyond KY 70
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 643

Kentucky Route 643
Location	near Halls Gap-Crab Orchard

Kentucky Route 643 is a 16.723-mile-long (26.913 km) rural secondary highway in eastern Lincoln County that runs from U.S. Route 27 and Kentucky Route 1247 south of Halls Gap to Kentucky Route 39 in downtown Crab Orchard via Ottenheim.

Major intersections

The entire route is in Lincoln County.

Location	mi^[36]	km	Destinations	Notes
​	0.000	0.000	US 27 south / KY 1247 (Somerset Road)	Western terminus; west end of KY 1247 overlap
​	0.240	0.386	KY 1247 north	East end of KY 1247 overlap
Ottenheim	4.199	6.758	KY 1948 south	Northern terminus of KY 1948
​	7.587	12.210	KY 1781 west / Mount Olive Cemetery Road	Eastern terminus of KY 1781
​	11.281	18.155	KY 1770 west	Eastern terminus of KY 1770
​	11.332	18.237	US 150
Crab Orchard	12.180	19.602	KY 39 (Main Street)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 646

Kentucky Route 646
Location	Jeffersonville-near Mount Sterling
Length	16.349 mi^[37]^[38] (26.311 km)
Existed	1987^[39]–present

Kentucky Route 646 is a 16.349-mile-long (26.311 km) rural secondary highway in western Montgomery County and far southeastern Clark County that runs from Kentucky Route 213 in far southern Jeffersonville to Kentucky Route 713 southeast of Mount Sterling via Trimble and Bogy-Chennault.

Major intersections

County	Location	mi^[citation needed]	km	Destinations	Notes
Montgomery	Jeffersonville	0.000	0.000	KY 213	Southern terminus
	Trimble	2.232	3.592	KY 3363 south (Sawmill Road) / Camargo-Levee Road	Northern terminus of KY 3363
	​	4.619	7.434	KY 11 north (Levee Road)	South end of KY 11 overlap
	​	4.731	7.614	KY 11 south (Levee Road)	North end of KY 11 overlap
Clark	​	7.830	12.601	KY 1960 west (Kiddville Road)	Eastern terminus of KY 1960
Montgomery	​	12.146	19.547	KY 11 south (Levee Road)	South end of KY 11 overlap
	​	12.519	20.147	KY 11 north (Levee Road)	North end of KY 11 overlap
	​	14.535	23.392	US 460 east (Camargo Road)	South end of US 460 overlap
	​	14.604	23.503	US 460 west (Camargo Road)	North end of US 460 overlap
	​	16.349	26.311	KY 713 (Spencer Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 648

Kentucky Route 648
Location	near Millersburg
Length	3.630 mi^[40]^[41] (5.842 km)
Existed	2012^[42]–present

Kentucky Route 648 is a 3.630-mile-long (5.842 km) supplemental state highway in far northeastern Bourbon County and northwestern Nicholas County that runs from Kentucky Route 1879 to U.S. Route 68 north of Millersburg.

Kentucky Route 649

Kentucky Route 649
Location	near Ault-near Ibex
Length	3.630 mi^[43] (5.842 km)
Existed	1987^[44]–present

Kentucky Route 649 is a 3.630-mile-long (5.842 km) state highway in northern Elliott County that runs from Kentucky Route 504 east of Ault to Mobley Flats Road and Ibex Post Office Road northeast of Ibex via Beartown and Stark.

Major intersections

The entire route is in Elliott County.

Location	mi^[43]	km	Destinations	Notes
​	0.000	0.000	KY 504	Western terminus
​	8.778	14.127	KY 504 north	West end of KY 504 overlap
​	9.120	14.677	KY 504 south	East end of KY 504 overlap
​	11.678	18.794	Mobley Flats Road / Ibex Post Office Road	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 650

Kentucky Route 650
Location	near Lenox-near The Ridge
Length	3.630 mi^[45]^[43] (5.842 km)

Kentucky Route 650 is a 3.630-mile-long (5.842 km) rural secondary state highway in eastern Morgan County that runs from Kentucky Route 172 east of Lenox to Kentucky Route 755 southeast of The Ridge via Wells Creek, Bascom, and Faye.

Major intersections

County	Location	mi^[45]^[43]	km	Destinations	Notes
Morgan	​	0.000	0.000	KY 172	Southern terminus
Elliott	​	8.562	13.779	KY 7 north	South end of KY 7 overlap
	​	9.021	14.518	KY 7 south	North end of KY 7 overlap
	​	11.504	18.514	KY 755 (South Ruin Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 651

Kentucky Route 651
Location	near Campton
Length	2.207 mi^[46] (3.552 km)

Kentucky Route 651 is a 2.207-mile-long (3.552 km) supplemental state highway in western Wolfe County that runs from a point along Sandy Ridge Road to Kentucky Route 15 southwest of Campton.

Major intersections

The entire route is in Wolfe County.

Location	mi^[46]	km	Destinations	Notes
​	0.000	0.000	Sandy Ridge Road	Southern terminus; continues beyond as Sandy Ridge Road
​	2.020	3.251	KY 3355 east (Bear Pen Creek Road)	Western terminus of KY 3355
​	2.207	3.552	KY 15	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 652

Kentucky Route 652
Location	Fairfield-near Taylorsville
Length	6.623 mi^[47]^[48] (10.659 km)

Kentucky Route 652 is a 6.623-mile-long (10.659 km) state highway in far northeastern Nelson County and southwestern Spencer County that runs from Kentucky Route 48 in downtown Fairfield to Kentucky Route 55 south of Taylorsville.

Major intersections

County	Location	mi^[47]^[48]	km	Destinations	Notes
Nelson	Fairfield	0.000	0.000	KY 48 (Highgrove Road)	Southern terminus
Spencer	​	2.338	3.763	KY 2885 north (Bowman Lane)	Southern terminus of KY 2885
	​	6.623	10.659	KY 55 (Bloomfield Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 653

Kentucky Route 653
Location	Sassafras Ridge
Length	1.724 mi^[49] (2.775 km)

Kentucky Route 653 is a 6.623-mile-long (10.659 km) rural secondary state highway in southwestern Fulton County that runs from Kentucky Route 94 and Cotton Gin Road to Ash Log Road and Davis Road near Sassafras Ridge.

Major intersections

The entire route is in Fulton County.

Location	mi^[49]	km	Destinations	Notes
Sassafras Ridge	0.000	0.000	KY 94 / Cotton Gin Road	Southern terminus
	0.020	0.032	KY 971 south	Northern terminus of KY 971
​	1.724	2.775	Ash Log Road / Davis Road	Northern terminus; continues as Davis Road beyond Ash Log Road
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 654

Kentucky Route 654
Location	Tribune-near Mattoon
Length	8.262 mi^[50] (13.296 km)

Kentucky Route 654 is a 8.262-mile-long (13.296 km) rural secondary state highway in eastern Crittenden County that runs from Kentucky Route 120 at Tribune to Baker Hollow Road and Weston Road northwest of Mattoon via Mattoon.

Major intersections

The entire route is in Crittenden County.

Location	mi	km	Destinations	Notes
Tribune	0.000	0.000	KY 120	Southern terminus
​	4.344	6.991	US 60
​	5.290	8.513	KY 1901 south (Seminary Loop Road)	Northern terminus of KY 1901
​	8.262	13.296	Baker Hollow Road / Weston Road	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 655

Kentucky Route 655
Location	Windyville
Length	9.214 mi^[51] (14.828 km)
Existed	1968–present

Kentucky Route 655 is a 9.214-mile-long (14.828 km) rural secondary highway in western Edmonson County. The C-shaped highway begins at KY 70 (Morgantown Road) northwest of Windyville. KY 655 follows Segal Road west across Gulf Creek and then south through Segal and east through Asphalt. The highway continues northeast to its terminus at KY 70 at Windyville.^{[1][51][52][53]}

Kentucky Route 656

Kentucky Route 656
Location	near Garrett
Length	1.463 mi^[54] (2.354 km)

Kentucky Route 656 is a 1.463-mile-long (2.354 km) supplemental state highway in south central Meade County that runs from Kentucky Route 1238 to Kentucky Route 333 south of Garrett.

Kentucky Route 657

Kentucky Route 657
Location	near Scythia-Lewisport
Length	9.302 mi^[55]^[56] (14.970 km)

Kentucky Route 657 is a 9.302-mile-long (14.970 km) rural secondary highway in far northeastern Daviess County and northwestern Hancock County that runs from Kentucky Route 1389 east of Scythia to Kentucky Route 334 and Pell Street in downtown Lewisport.

Major intersections

County	Location	mi^[55]^[56]	km	Destinations	Notes
Daviess	​	0.000	0.000	KY 1389	Southern terminus
Hancock	​	2.454	3.949	KY 662 west	Eastern terminus of KY 662
	​	4.313	6.941	KY 1403 south	Northern terminus of KY 1403
	​	6.106	9.827	KY 661 south	Northern terminus of KY 661
	Lewisport	8.310	13.374	US 60 – Hawesville, Owensboro
		9.302	14.970	KY 334 (Pell Street / Fourth Street) / Pell Street	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 659

Kentucky Route 659
Location	near Mannsville
Length	7.968 mi^[57] (12.823 km)
Existed	1987^[58]–present

Kentucky Route 659 is a 7.968-mile-long (12.823 km) rural secondary highway in eastern Taylor County that runs from Kentucky Route 70 east of Mannsville to KY 70 again along with Kentucky Route 1752 southwest of Bass.

Kentucky Route 660

Kentucky Route 660
Location	Louisville-near Mt. Washington
Length	3.087 mi^[59]^[60] (4.968 km)

Kentucky Route 660 is a 3.087-mile-long (4.968 km) rural secondary highway in far southern Jefferson County and northeastern Bullitt County that runs from U.S. Route 31E to Kentucky Route 1319 north of Mt. Washington.

Kentucky Route 661

Kentucky Route 661
Location	near Yelvington
Length	2.846 mi^[61]^[62] (4.580 km)

Kentucky Route 661 is a 2.846-mile-long (4.580 km) rural secondary highway in far northeastern Daviess County and far northwestern Hancock County that runs from Kentucky Route 662 to Kentucky Route 657 northeast of Yelvington.

Kentucky Route 662

Kentucky Route 662
Location	Yelvington
Length	5.231 mi^[61]^[62] (8.418 km)

Kentucky Route 662 is a 5.231-mile-long (8.418 km) rural secondary highway in northeastern Daviess County and far northwestern Hancock County that runs from Kentucky Route 405 in Yelvington to Kentucky Route 657 northeast of Yelvington.

Major intersections

County	Location	mi	km	Destinations	Notes
Daviess	Yelvington	0.000	0.000	KY 405	Western terminus
	​	3.617	5.821