Wyoming Dialing Codes, Country Codes and Area Codes
| City | Country Codes | Area Codes | Dialing Codes |
|---|---|---|---|
| Casper | +1 | 307 | +1 307 |
| Cheyenne | +1 | 307 | +1 307 |
| Gillette | +1 | 307 | +1 307 |
| Laramie | +1 | 307 | +1 307 |
| Rock Springs | +1 | 307 | +1 307 |
| Sheridan | +1 | 307 | +1 307 |
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