List of channel numbers assigned to FM frequencies in North America

In the Americas (defined as International Telecommunication Union (ITU) region 2), the FM broadcast band consists of 101 channels, each 200 kHz wide, in the frequency range from 87.8 to 108.0 MHz, with "center frequencies" running from 87.9 MHz to 107.9 MHz. For most purposes an FM station is associated with its center frequency. However, each FM frequency has also been assigned a channel number, which ranges from 200 to 300.^[1]

FM channel numbers are most commonly used for internal regulatory purposes. The range originally adopted in 1945 began with channel 201 (88.1 MHz), or a value high enough to avoid confusion with television channel numbers,^[2] which over the years have had values ranging from 1 to 83. Having a gap between the highest TV channel number and the lowest FM channel number allowed for expansion, which occurred in 1978 when FM channel 200 (87.9 MHz) was added.^[3]

FM channel numbers are commonly used for listing FM Station Allotments, which are the FM station assignments designated for individual communities. In the United States they are also used in the callsigns of low-powered FM translators relaying AM or FM station signals. For example, the "237" in the callsign for translator K237FR in Tumwater, Washington indicates that the station is transmitting on channel 237, which corresponds to 95.3 MHz.

Frequency	Channel		Frequency	Channel		Frequency	Channel		Frequency	Channel
87.9 MHz	200		93.1 MHz	226		98.1 MHz	251		103.1 MHz	276
88.1 MHz	201		93.3 MHz	227		98.3 MHz	252		103.3 MHz	277
88.3 MHz	202		93.5 MHz	228		98.5 MHz	253		103.5 MHz	278
88.5 MHz	203		93.7 MHz	229		98.7 MHz	254		103.7 MHz	279
88.7 MHz	204		93.9 MHz	230		98.9 MHz	255		103.9 MHz	280
88.9 MHz	205		94.1 MHz	231		99.1 MHz	256		104.1 MHz	281
89.1 MHz	206		94.3 MHz	232		99.3 MHz	257		104.3 MHz	282
89.3 MHz	207		94.5 MHz	233		99.5 MHz	258		104.5 MHz	283
89.5 MHz	208		94.7 MHz	234		99.7 MHz	259		104.7 MHz	284
89.7 MHz	209		94.9 MHz	235		99.9 MHz	260		104.9 MHz	285
89.9 MHz	210		95.1 MHz	236		100.1 MHz	261		105.1 MHz	286
90.1 MHz	211		95.3 MHz	237		100.3 MHz	262		105.3 MHz	287
90.3 MHz	212		95.5 MHz	238		100.5 MHz	263		105.5 MHz	288
90.5 MHz	213		95.7 MHz	239		100.7 MHz	264		105.7 MHz	289
90.7 MHz	214		95.9 MHz	240		100.9 MHz	265		105.9 MHz	290
90.9 MHz	215		96.1 MHz	241		101.1 MHz	266		106.1 MHz	291
91.1 MHz	216		96.3 MHz	242		101.3 MHz	267		106.3 MHz	292
91.3 MHz	217		96.5 MHz	243		101.5 MHz	268		106.5 MHz	293
91.5 MHz	218		96.7 MHz	244		101.7 MHz	269		106.7 MHz	294
91.7 MHz	219		96.9 MHz	245		101.9 MHz	270		106.9 MHz	295
91.9 MHz	220		97.1 MHz	246		102.1 MHz	271		107.1 MHz	296
92.1 MHz	221		97.3 MHz	247		102.3 MHz	272		107.3 MHz	297
92.3 MHz	222		97.5 MHz	248		102.5 MHz	273		107.5 MHz	298
92.5 MHz	223		97.7 MHz	249		102.7 MHz	274		107.7 MHz	299
92.7 MHz	224		97.9 MHz	250		102.9 MHz	275		107.9 MHz	300
92.9 MHz	225

References

1. "Why Do FM Frequencies End in an Odd Decimal?" (fcc.gov)
2. "FCC Adopts FM Set Numbering System", Broadcasting, November 19, 1945, page 4.
3. "FCC moves to overhaul rules for noncommercial radio and TV", Broadcasting, June 12, 1978, page 50.