Wyoming Area Codes: Complete List With Cities Served
Wyoming is served by 1 area code. Because the whole state shares 307, it is one of the simplest numbering setups in the country.
Wyoming area code list
| Area code | Main places served |
|---|---|
| 307 | Cheyenne, Casper, Laramie and Gillette |
Place names come from ZIP code records linked to each area code, so they show where a code is most common rather than exact boundaries.
Area codes by major city
| City | Area codes |
|---|---|
| Casper | 307 |
| Cheyenne | 307 |
| Gillette | 307 |
| Laramie | 307 |
| Afton | 307 |
| Aladdin | 307 |
| Albin | 307 |
| Alcova | 307 |
| Alpine | 307 |
| Alta | 307 |
| Alva | 307 |
| Arapahoe | 307 |
| Arminto | 307 |
| Arvada | 307 |
| Auburn | 307 |
How to format a Wyoming phone number
US numbers have ten digits: the area code, a three-digit exchange and a four-digit line number. A Wyoming number is written as (307) 555-0123 for display, or +13075550123 in E.164 format for storage.
Safe numbers for testing
The range 555-0100 to 555-0199 is reserved for fictional use in every area code. Our generator combines these with real local area codes, so test data looks right without reaching a real person.
Create realistic Wyoming addresses for testing, with real cities, counties and ZIP codes.
Generate Wyoming addresses