| General Information about Area Code 406 | |
|---|---|
| Country | United States |
| State / Province / Territory | Montana |
| Major City | Billings |
| Time Zone | Mountain (UTC-07:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 406-530 | Laurel | Yellowstone | Landline |
| 406-866 | Vaughn | Cascade | Landline |
| 406-624 | Bozeman | Gallatin | Landline |
| 406-648 | Saco | Phillips | Landline |
| 406-563 | Anaconda | Deer Lodge | Landline |
| 406-236 | Neihart | Cascade | Landline |
| 406-505 | Conrad | Pondera | Wireless |
| 406-851 | Miles City | Custer | Wireless |
| 406-826 | Plains | Sanders | Landline |
| 406-682 | Virginia City | Madison | Landline |
| 406-792 | Butte | Silver Bow | Landline |
| 406-551 | Bozeman | Gallatin | Landline |
| 406-824 | Saint Ignatius | Lake | Wireless |
| 406-557 | Jordan | Garfield | Landline |
| 406-980 | Townsend | Broadwater | Wireless |
| 406-490 | Butte | Silver Bow | Wireless |
| 406-476 | Dutton | Teton | Landline |
| 406-725 | Larslan | Valley | Landline |
| 406-604 | Great Falls | Cascade | Landline |
| 406-808 | Havre | Hill | Wireless |