| 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 |
|---|---|---|---|
| 307-547 | Burns | Laramie | Landline |
| 307-383 | Baggs | Carbon | Landline |
| 307-234 | Casper | Natrona | Landline |
| 307-279 | Cokeville | Lincoln | Landline |
| 307-677 | Evanston | Uinta | Wireless |
| 307-777 | Cheyenne | Laramie | Landline |
| 307-544 | Jeffrey City | Fremont | Landline |
| 307-712 | Cody | Park | Wireless |
| 307-399 | Laramie | Albany | Wireless |
| 307-680 | Gillette | Campbell | Wireless |
| 307-724 | Casper | Natrona | Wireless |
| 307-577 | Casper | Natrona | Landline |
| 307-739 | Jackson | Teton | Landline |
| 307-340 | Manville | Niobrara | Wireless |
| 307-757 | Cheyenne | Laramie | Landline |
| 307-720 | Wheatland | Platte | Wireless |
| 307-351 | Douglas | Converse | Wireless |
| 307-417 | Rawlins | Carbon | Landline |
| 307-316 | Cheyenne | Laramie | Landline |
| 307-798 | Rock River | Albany | Wireless |