Learn about the 307 area code, including its location, cities, time zone, introduction date, and related area codes.
307 Area Code Details
Major Cities in the 307 Area Code
The 307 area code is associated with the following cities and communities:
- Casper
- Cheyenne
- Gillette
- Laramie
Where Is Area Code 307 Located?
The 307 area code serves communities in Wyoming. The exact communities and numbering assignments can change as telephone numbering resources are updated.
307 Area Code Time Zone
The 307 area code is associated with the Mountain time zone.
When Was 307 Area Code Introduced?
The 307 area code was introduced in 01-Jan-1947.
How to Call a 307 Area Code Number
For a call within the same numbering plan, dial the required local number according to your carrier’s dialing rules. For calls from outside the United States, use the United States country code (+1), followed by the area code and seven-digit telephone number.
307 Area Code FAQ
What state is 307 area code in?
The 307 area code is associated with Wyoming.
What time zone is 307 area code in?
The 307 area code is associated with Mountain.
What cities use 307 area code?
Casper|Cheyenne|Gillette|Laramie
More Questions About Area Code 307
What state is area code 307 in?
Area code 307 is associated with Wyoming.
What time zone is area code 307 in?
The listed time zone for area code 307 is Mountain.