Wyoming area code: 307 covers the whole state
Only one Wyoming area code exists: 307, in service since 1947.
- The area code
- 307
- Operating since
- 1947
- Rate centre list
- 92
- The time zone
- Mountain time
- Expected exhaust
- 2054
- From outside the country
- +1 307 plus the 7-digit number
These figures come from NANPA: its area code report, its rate centre report and its exhaust projections, file dated 11/01/2026. We are not an official NANPA site.
Every place that uses the 307 area code
A total of 92 rate centres (local calling areas):
Wright, Worland, Wheatland, West Spearfish, West Lyman, West Edgemont, West Belle Fourche, Urie, Upton, Torrington, Thermopolis, Ten Sleep, Sundance, Southeast Sheridan, South Wyola, South Alzada, Shoshoni, Shirley Basin, Sheridan, Saratoga, Rock Springs, Rock River, Riverton, Rawlins, Powell, Pinedale, Pine Bluffs, Old Faithful, Newcastle, Mountain View, Moran, Moorcroft, Midwest, Meeteetse, Medicine Bow, Manila, Mammoth, Lyman, Lusk, Lovell, Lingle, Leigh Canyon, Laramie, Lander, Lake, Lagrange, La Barge, Kemmerer, Kaycee, Jeffrey City, Jackson, Hyattville, Hulett, Hanna, Hamilton Dome, Guernsey, Greybull, Green River, Glenrock, Glendo, Gillette, Gas Hills, Freedom, Frannie, Farson, Evanston, Encampment, Dubois, Douglas, Decker, Daniel, Crowheart, Cokeville, Cody, Clearmont, Clark, Chugwater, Cheyenne, Casper, Carpenter, Burns, Burlington, Buffalo, Border, Big Piney, Basin, Baggs, Arvada, Alta, Alpine, Albin, Afton.
The origin of Wyoming's area code
One of the first codes assigned in 1947 was 307, and NANPA shows that no code has been split away from 307.
Will a new area code come to Wyoming?
Not for years: NANPA forecasts that 307 numbers run out in 2054.
| NANPA forecast | Forecast exhaust |
|---|---|
| 2026.1 | 2054 4Q |
| 2025.2 | 2050 2Q |
| 2025.1 | 2048 4Q |
| 2024.2 | 2046 1Q |
| 2024.1 | 2044 3Q |
| 2023.2 | 2044 3Q |
Area codes in the states bordering Wyoming
Wyoming area code questions
Which area code does Wyoming use?
It is 307, for the whole state.
What is the way to get a Wyoming number?
A 307 number comes from any provider that assigns local numbers. Check first-year cost by provider.
Do I dial the area code for local calls in Wyoming?
No. Inside 307, local calls take 7 digits, while long-distance calls are dialled as 1 + the 10-digit number. Of the 378 US area codes now in service, only 54 still allow 7-digit local calls. When you call from abroad, dial +1 307 first.