Helena, Montana
Mountain Time Zone (UTC-7) · MT · —
About Area Codes in Helena, Montana
Helena, Montana is served by area code 406, which was one of the original area codes established in 1947 under the North American Numbering Plan. The city falls within the Mountain time zone (UTC-7). All calls to and from Helena use the 406 area code prefix for local and long-distance dialing.
Frequently Asked Questions
What area code is Helena, Montana?
Helena, Montana uses area code 406.
What time zone is Helena in?
Helena is in the Mountain time zone (UTC-7).
Do I need to dial 10 digits when calling Helena?
Standard 7-digit dialing is used for local calls within Helena. However, 10-digit dialing is always accepted and required for long-distance calls.
When was area code 406 created?
Area code 406 is one of the original 86 area codes established in 1947 as part of the North American Numbering Plan (NANP).
What cities share area code 406 with Helena?
Other cities sharing area code 406 with Helena include Anaconda, Billings, Bozeman, Butte, Great Falls, among others.
Also called Helena:
Helena, MT · Mountain Time Zone