Montana Area Code Information
Montana Area Codes
Montana is currently using one area code. Montana does not utilize any area code overlays. Area code 406 covers all of the State of Montana.
Changes and History of Montana Area Codes:
01/01/1947
Area code 406 was put into service.
Area Codes in Selected Montana Locations
Area Codes Look Up By State and City
Area Codes Look Up in Surrounding Places
