About Area Code 307
Area code 307 serves Wyoming, covering major cities including Cheyenne, Casper. Operating in the Mountain Time (MT), this code was established in 1947.
| State | Time Zone | Cities |
|---|---|---|
| Wyoming | Mountain Time (MT) | Cheyenne, Casper |
Active Area Code
307
Wyoming
Mountain Time (MT)
Est. 1947
PRIMARY
Location
Wyoming
Cheyenne
ACTIVE
Coverage
2 Cities
Since 1947
Beware of Spam Calls
Scammers frequently use 307 numbers. Always verify unknown callers before sharing personal information.
Protect Yourself NowCommon Questions
Where is 307?
Located in Wyoming, serving Cheyenne and surrounding areas.
What time zone?
Operates in Mountain Time (MT).
When established?
Area code 307 was introduced in 1947.
Used for spam?
Can be used by legitimate and fraudulent callers. Always verify unknown numbers.