What area code is Boulder, MT?
| City | Boulder, MT |
|---|---|
| State | Montana |
| Area code | 406 |
| Time zone | Mountain Time |
| Phone prefixes | 4 in our data |
Look up a Boulder number
About area code 406
| Area code | Also covers |
|---|---|
| 406 | Billings, Missoula, Great Falls and Helena |
Other places in area code 406
- Billings, MT
- Missoula, MT
- Great Falls, MT
- Helena, MT
- Bozeman, MT
- Kalispell, MT
- Butte, MT
- Miles City, MT
- Sidney, MT
- Lewistown, MT
- Livingston, MT
- Dillon, MT
- Hamilton, MT
- Hardin, MT
- Havre, MT
- Shelby, MT
- Columbus, MT
- Glendive, MT
- Laurel, MT
- Libby, MT
- Red Lodge, MT
- Anaconda, MT
- Colstrip, MT
- Conrad, MT
Questions
- What is the area code for Boulder, Montana?
- Boulder uses area code 406.
- What time zone is Boulder in?
- Boulder is in Mountain Time.
- Do I need to dial the area code for a local call in Boulder?
- Usually yes. Most of the US and Canada now uses 10-digit local dialing, so it’s safest to include 406.
- How do I call Boulder from another country?
- Dial your country’s exit code (011 from most places, 00 from Europe), then 1, then the area code and number: +1 406 XXX XXXX.