| 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 |
|---|---|---|---|
| 307-730 | Jackson | Teton | Wireless |
| 307-772 | Cheyenne | Laramie | Landline |
| 307-600 | Cokeville | Lincoln | Wireless |
| 307-269 | Wheatland | Platte | Landline |
| 307-876 | Shoshoni | Fremont | Landline |
| 307-864 | Thermopolis | Hot Springs | Landline |
| 307-655 | Ranchester | Sheridan | Landline |
| 307-754 | Powell | Park | Landline |
| 307-337 | Casper | Natrona | Landline |
| 307-359 | Douglas | Converse | Wireless |
| 307-783 | Evanston | Uinta | Landline |
| 307-871 | Green River | Sweetwater | Wireless |
| 307-836 | Guernsey | Platte | Landline |
| 307-201 | Jackson | Teton | Landline |
| 307-217 | Buffalo | Johnson | Wireless |
| 307-255 | Evanston | Uinta | Wireless |
| 307-246 | Pine Bluffs | Laramie | Landline |
| 307-466 | Green River | Sweetwater | Landline |
| 307-343 | Laramie | Albany | Wireless |
| 307-369 | Cheyenne | Laramie | Landline |