Wyoming phone numbers and area codes
Wyoming has 1 area code and 499 assigned prefixes.
Look at a prefix's carrier mix below, or look up a full number on the home page.
- Mobile carrier 25%
- Local phone company 35%
- Internet / business phone carrier 24%
- Phone company 15%
Area codes in Wyoming
| Code | Area | Prefixes here |
|---|---|---|
| 307 | Wyoming (all) | 499 |
Biggest local calling areas
Numbers are assigned to rate centers. These have the most prefixes in Wyoming (the number is how many).
Cheyenne60Casper40Jackson21Gillette21Laramie18Rock Spring17Sheridan17Cody15Riverton13Evanston13Lander11Powell10Green River10Buffalo9Douglas9Rawlins9Afton8Wheatland8Pinedale7Torrington7Lusk6Kemmerer6Newcastle6Sundance5Worland5Lake4Cokeville4Border4Freedom4Big Piney4Glenrock4Wspearfish4Hanna4LaGrange4Mt. View4Moran4Oldfathful4Thermopolis4Lingle3Mammoth3Dubois3Farson3Jeffrey City3Wright3Shoshoni3Saratoga3Baggs3Medicine Bow3La Barge3Wbllfourch3Lyman3
Carriers in Wyoming
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| CenturyLink / Lumen | Local phone company | 97 | 19% |
| Union Telephone | Local phone company | 65 | 13% |
| Verizon Wireless | Mobile carrier | 60 | 12% |
| AT&T Mobility | Mobile carrier | 49 | 10% |
| Onvoy | Internet / business phone carrier | 41 | 8% |
| Level 3 (Lumen) | Internet / business phone carrier | 27 | 5% |
| Bandwidth | Internet / business phone carrier | 19 | 4% |
| Rt Communications | Phone company | 17 | 3% |
| T-Mobile (including Sprint) | Mobile carrier | 14 | 3% |
| Union Tel | Phone company | 11 | 2% |
| Charter / Spectrum | Internet / business phone carrier | 10 | 2% |
| Tri-county Tel. Assn | Phone company | 9 | 2% |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.