Cities in area code 307
307 numbers are anchored to 92 rate centers across Wyoming. Each row shows how many active prefixes the locality holds — a direct measure of its numbering footprint.
Ranked by active prefixes, the code's territory runs through Cheyenne, Casper, Jackson, Gillette, Laramie, Rock Springs, Sheridan and Cody, and 83 smaller communities down to single-prefix localities.
Clock-wise the coverage is Mountain.
A caller's real location can differ: numbers port between carriers and follow their owners when they move. Use the prefix tables to see where a specific number block was issued.
| Locality (rate center) | Active prefixes | Metro area | All codes serving it |
|---|---|---|---|
| Cheyenne | 59 | — | 307 |
| Casper | 40 | — | 307 |
| Jackson | 21 | — | 307 |
| Gillette | 21 | — | 307 |
| Laramie | 18 | — | 307 |
| Rock Springs | 17 | — | 307 |
| Sheridan | 17 | — | 307 |
| Cody | 15 | — | 307 |
| Riverton | 13 | — | 307 |
| Evanston | 13 | — | 307 |
| Lander | 11 | — | 307 |
| Powell | 10 | — | 307 |
| Green River | 10 | — | 307 |
| Buffalo | 9 | — | 307 |
| Douglas | 9 | — | 307 |
| Rawlins | 9 | — | 307 |
| Afton | 8 | — | 307 |
| Wheatland | 8 | — | 307 |
| Pinedale | 7 | — | 307 |
| Torrington | 7 | — | 307 |
| Lusk | 6 | — | 307 |
| Kemmerer | 6 | — | 307 |
| Newcastle | 6 | — | 307 |
| Sundance | 5 | — | 307 |
| Worland | 5 | — | 307 |
| Lake | 4 | — | 307 |
| Cokeville | 4 | — | 307 |
| Border | 4 | — | 307 |
| Freedom | 4 | — | 307 |
| Big Piney | 4 | — | 307 |
| Glenrock | 4 | — | 307 |
| West Spearfish | 4 | — | 307 |
| Hanna | 4 | — | 307 |
| Lagrange | 4 | — | 307 |
| Mountain View | 4 | — | 307 |
| Moran | 4 | — | 307 |
| Old Faithful | 4 | — | 307 |
| Thermopolis | 4 | — | 307 |
| Lingle | 3 | — | 307 |
| Mammoth | 3 | — | 307 |
| Dubois | 3 | — | 307 |
| Farson | 3 | — | 307 |
| Jeffrey City | 3 | — | 307 |
| Wright | 3 | — | 307 |
| Shoshoni | 3 | — | 307 |
| Saratoga | 3 | — | 307 |
| Baggs | 3 | — | 307 |
| Medicine Bow | 3 | — | 307 |
| La Barge | 3 | — | 307 |
| West Belle Fourche | 3 | — | 307 |
| Southeast Sheridan | 2 | — | 307 |
| Burns | 2 | — | 307 |
| Hamilton Dome | 2 | — | 307 |
| Guernsey | 2 | — | 307 |
| Midwest | 2 | — | 307 |
| Daniel | 2 | — | 307 |
| Shirley Basin | 2 | — | 307 |
| Greybull | 2 | — | 307 |
| Alpine | 2 | — | 307 |
| Rock River | 2 | — | 307 |
| Moorcroft | 2 | — | 307 |
| Lyman | 2 | — | 307 |
| Basin | 2 | — | 307 |
| Lovell | 2 | — | 307 |
| Glendo | 2 | — | 307 |
| Pine Bluffs | 1 | — | 307 |
| Albin | 1 | — | 307 |
| Encampment | 1 | — | 307 |
| South Wyola | 1 | — | 307 |
| Alta | 1 | — | 307 |
| Ten Sleep | 1 | — | 307 |
| Chugwater | 1 | — | 307 |
| Gas Hills | 1 | — | 307 |
| Hulett | 1 | — | 307 |
| Upton | 1 | — | 307 |
| Hyattville | 1 | — | 307 |
| Crowheart | 1 | — | 307 |
| Leigh Canyon | 1 | — | 307 |
| Clark | 1 | — | 307 |
| Carpenter | 1 | — | 307 |
| West Edgemont | 1 | — | 307 |
| Frannie | 1 | — | 307 |
| Arvada | 1 | — | 307 |
| Kaycee | 1 | — | 307 |
| Decker | 1 | — | 307 |
| Clearmont | 1 | — | 307 |
| Burlington | 1 | — | 307 |
| Urie | 1 | — | 307 |
| West Lyman | 1 | — | 307 |
| Meeteetse | 1 | — | 307 |
| Manila | 1 | — | 307 |
| South Alzada | 1 | — | 307 |
FAQ
What is the biggest city in area code 307?
Cheyenne holds the most active prefixes (59), making it the code's largest numbering locality.
How many places does 307 cover?
92 rate centers in Wyoming hold active 307 prefixes, from Cheyenne down to communities with a single prefix.
Does a 307 number guarantee the caller lives in one of these places?
No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.