Area Code
Wyoming, United States
Local Time
2:14 PM
Mountain Time
Area Code
307
State / Province
Wyoming
Country
United States
Time Zone
Mountain Time
Area code 307 covers 92 rate centers across Wyoming. Rate centers are geographic areas used by telephone companies to determine local calling boundaries.
Use the E.164 format for clickable phone links (RFC 3966):
<a href="tel:+13075550100">+13075550100</a><a href="tel:+13075550199">+13075550199</a>Area code 307 is a North American Numbering Plan (NANP) telephone area code assigned to Wyoming, United States. It is the sole area code assigned to Wyoming, covering the entire state or province under a single numbering plan area.
Yes. 307 is an active North American Numbering Plan (NANP) area code, currently assigned to Wyoming, United States. It is safe to answer or dial calls using this area code.
Area code 307 covers 92 rate centers across Wyoming. Communities served include Afton, Albin, Alpine, Alta, Arvada, and 87 more localities. Rate centers are the geographic building blocks telephone carriers use to determine local calling boundaries and to assign numbers when a business or individual requests a phone number in a specific city.
All numbers in the 307 area code observe Mountain Time (IANA timezone: America/Denver). Mountain Time is UTC−7 in winter (MST) and UTC−6 in summer (MDT). When placing a call to a 307 number from a different time zone, check the current local time above to avoid calling outside of business hours.
From within Wyoming, dial the 7-digit local number directly if calling within the same rate center, or dial 1 + 307 + 7-digit number for long-distance calls within North America. From outside the US or Canada, dial your country's international exit code followed by 1 307 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 307 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +13075550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.