| Area Code 307 Details | |
|---|---|
| Country | United States |
| State/Province | Wyoming |
| Major City | Casper |
| Time Zone | Mountain (UTC-07:00) |
| Prefix | County | Phone Type | Status |
|---|---|---|---|
| 307-887 | Lincoln | Cell Number | Active |
| 307-890 | Lincoln | Cell Number | Active |
| 307-896 | Crook | Landline | Active |
| 307-899 | Park | Cell Number | Active |
| 307-920 | Laramie | Cell Number | Active |
| 307-921 | Hot Springs | Cell Number | Active |
| 307-922 | Sweetwater | Landline | Active |
| 307-939 | Campbell | Landline | Active |
| 307-941 | Weston | Cell Number | Active |
| 307-949 | Weston | Cell Number | Active |
| 307-977 | Albany | Cell Number | Active |
| 307-995 | Carbon | Landline | Active |
| 307-996 | Laramie | Landline | Active |