| General Information about Area Code 307 | |
|---|---|
| Country | United States |
| State / Province / Territory | Wyoming |
| Major City | Cheyenne |
| Time Zone | Mountain (UTC-07:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 307-460 | Laramie | Albany | Landline |
| 307-231 | Pinedale | Sublette | Wireless |
| 307-202 | Powell | Park | Wireless |
| 307-433 | Cheyenne | Laramie | Landline |
| 307-733 | Jackson | Teton | Landline |
| 307-774 | Jackson | Teton | Wireless |
| 307-329 | Encampment | Carbon | Wireless |
| 307-679 | Evanston | Uinta | Wireless |
| 307-378 | Rock River | Albany | Landline |
| 307-780 | Lyman | Uinta | Wireless |
| 307-439 | Casper | Natrona | Landline |
| 307-622 | Gillette | Campbell | Wireless |
| 307-540 | Jeffrey City | Fremont | Wireless |
| 307-684 | Buffalo | Johnson | Landline |
| 307-229 | Cokeville | Lincoln | Wireless |
| 307-240 | Riverton | Fremont | Wireless |
| 307-388 | Worland | Washakie | Wireless |
| 307-718 | Worland | Washakie | Wireless |
| 307-704 | Gillette | Campbell | Wireless |
| 307-232 | Casper | Natrona | Landline |