Area Code 406 — Montana

Q: What time zone is area code 406?

Area code 406 is in the Mountain Time zone (Mountain Time).

Active General Purpose Code United States

Area code 406 is located in Montana and operates on Mountain Time . The largest city served is Billings .

Coverage Area

Area code 406 — Montana

Area Code Details

Area Code: 406
State / Province: Montana (MT)
Country: United States
Time Zone: Mountain Time Mountain Time
Local Time Now: —
Status: Active
Code Type: General Purpose Code
In Service Since: January 1, 1947
Assigned: January 1, 1947
Population Served: ~480,133 est.

Cities Served

Largest City Billings

Billings Missoula Great Falls Bozeman Butte Helena Kalispell Havre Anaconda Miles City Helena Valley Southeast Belgrade Helena Valley West Central Evergreen Livingston Whitefish Laurel Sidney Lockwood Lewistown

Rate Centers & Exchanges

29 rate centers identified within area code 406

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Nearby Area Codes

Frequently Asked Questions About Area Code 406

What state is area code 406?

Area code 406 is located in Montana, United States.

Where is area code 406 from?

Area code 406 originates from Montana. It operates in the Mountain Time zone.

What time zone is area code 406?

Area code 406 falls within the Mountain Time zone (Mountain Time).

What cities are in area code 406?

Area code 406 serves cities including Billings, Missoula, Great Falls, Bozeman, Butte, Helena, Kalispell, Havre, and more.

Is a call from area code 406 a scam?

Area code 406 is a legitimate general purpose code area code serving Montana. Like any area code, individual numbers using 406 can be used for scam calls — always verify the specific number if you receive an unexpected or suspicious call.