Area code 307 covers the entire state of Wyoming and is one of the original codes introduced in 1947. Due to Wyoming’s low population density and vast open landscapes, 307 has never been split or overlaid, making it one of the few single-area-code states in the U.S. It includes cities like Cheyenne, Casper, Laramie, and Jackson. The code represents rugged independence, wide-open spaces, and the spirit of the American West. Ten-digit dialing is not required for in-state calls. Area code 307 is a source of pride for Wyomingites, symbolizing a close-knit, frontier-rooted state with deep historical and natural significance.
Locations for Area Code - 307
Browse all cities and areas that belong to this area code.
Casper
- State: WY
- Population: 60,285
- Latitude: 42.86663, Longitude: -106.31308
- Elevation: 1560 m
Cheyenne
- State: WY
- Population: 65,132
- Latitude: 41.13998, Longitude: -104.82025
- Elevation: 1856 m
Gillette
- State: WY
- Population: 32,649
- Latitude: 44.29109, Longitude: -105.50222
- Elevation: 1388 m
Laramie
- State: WY
- Population: 65,132
- Latitude: 41.13998, Longitude: -104.82025
- Elevation: 1856 m
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