US Area Code
406
Montana (statewide) · Montana
Area code 406 serves Billings, Missoula, Great Falls and surrounding areas in Montana. Look up any 406 number below to check for spam, see caller ID, carrier, and line type.
Area Code Details
- State / Territory
- Montana
- Region
- Montana (statewide)
- Major Cities
- Billings, Missoula, Great Falls
- Timezone
- Mountain Time
- Country
- United States
- Format
- +1 (406) XXX-XXXX