State
Area Code 406
Billings, Missoula, Helena, Montana
Local time now
…
Time zone
Mountain
Main cities
Billings, Missoula, Helena, Great Falls, Bozeman, Kalispell
Overlays
None
In service since
1947
When you can make sales calls to 406 numbers
| Every day | 8 AM – 9 PM (federal rule) |
In the called person's local time. Guidance, not legal advice.
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Other area codes in Montana
Questions about area code 406
- Where is area code 406?
- Area code 406 is in Montana, covering Billings, Missoula, Helena, Great Falls.
- What time zone is area code 406?
- Mountain time.
- When can telemarketers call a 406 number?
- Federal rules allow sales calls from 8 AM to 9 PM local time.
- Is 406 a toll-free number?
- No. 406 is a regular area code for Montana. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.