State · 1 area codes

Wyoming area codes

Wyoming is served by a single statewide area code (307) covering Cheyenne, Casper and Laramie.

A · Metros

Major metro areas

Cheyenne Casper Laramie

B · Directory

Every code opens its profile — codes with a full write-up show their place; the rest show live numbering data while their detailed profile is added.

307

Sources

List of NANP area codes (secondary)

Compiled by North American Numbers, last checked 2026-09-19. How this is made.