| 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 |
|---|---|---|---|
| 307-287 | Cheyenne | Laramie | Wireless |
| 307-731 | Lovell | Big Horn | Wireless |
| 307-421 | Cheyenne | Laramie | Wireless |
| 307-823 | Cheyenne | Laramie | Landline |
| 307-413 | Jackson | Teton | Wireless |
| 307-426 | Cheyenne | Laramie | Landline |
| 307-543 | Moran | Teton | Landline |
| 307-799 | Evanston | Uinta | Wireless |
| 307-738 | Kaycee | Johnson | Landline |
| 307-283 | Sundance | Crook | Landline |
| 307-837 | Veteran | Goshen | Landline |
| 307-715 | Torrington | Goshen | Wireless |
| 307-696 | Gillette | Campbell | Wireless |
| 307-756 | Moorcroft | Crook | Landline |
| 307-497 | Evanston | Uinta | Landline |
| 307-313 | Evanston | Uinta | Landline |
| 307-751 | Sheridan | Sheridan | Wireless |
| 307-371 | Rock Springs | Sweetwater | Wireless |
| 307-787 | Lyman | Uinta | Landline |
| 307-252 | Rock Springs | Sweetwater | Wireless |