Quick Answer
Montana has 1 active area code: 406. All Montana area codes are in the Mountain time zone. Data source: NANPA.
All Area Codes in Montana
| Code | Region | Major Cities | Timezone |
|---|---|---|---|
| 406 | Montana (statewide) | Billings, Missoula, Great Falls | Mountain |
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Frequently Asked Questions
How many area codes does Montana have?
Montana has 1 active area code: 406.
What are the area codes in Montana?
The area codes in Montana are: 406 (Montana (statewide)).
What area code is Billings?
Billings uses area code 406, located in Montana (statewide), Montana.
What time zone are Montana area codes in?
All area codes in Montana are in the Mountain time zone.
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