406 Area Code Phone Numbers

Where is Area Code 406?

The 406 area code is located in the state of Montana. Area code 406 is one of 325 three-digit telephone area codes in the United States. Our database indicates that around 395,318 unique phone numbers and 664,187 individuals near the cities of Billings,Missoula,Great Falls.

State:Montana
Major City:Billings
Timezone:Mountain
Current Time: 15:5pm

Major Cities in 406 Area Code

  • Billings
  • Missoula
  • Great Falls
  • Bozeman
  • Butte-Silver Bow
  • Helena
  • Kalispell
  • Havre
Area Code 406 Map
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