CallataGuidesLocal business phone numbers in Montana
46 Montana cities and towns with their area codes and NANPA-assigned exchanges.
Montana at a glance
Montana has 1 geographic area code in service (406), 754 assigned central office codes across 260 rate centers, and 63 carriers holding codes, according to NANPA. Each city page lists its area codes, prefixes and carriers.
Cities and towns
| Place | County | Population (2024) | Area codes | Exchanges |
|---|---|---|---|---|
| Billings | Yellowstone County | 121,483 | 406 | 72 |
| Missoula | Missoula County | 78,204 | 406 | 47 |
| Great Falls | Cascade County | 60,013 | 406 | 37 |
| Bozeman | Gallatin County | 57,894 | 406 | 32 |
| Helena | Lewis and Clark County | 34,729 | 406 | 38 |
| Kalispell | Flathead County | 31,296 | 406 | 25 |
| Belgrade | Gallatin County | 12,741 | 406 | 4 |
| Whitefish | Flathead County | 9,256 | 406 | 4 |
| Havre | Hill County | 9,204 | 406 | 7 |
| Livingston | Park County | 9,021 | 406 | 8 |
| Miles City | Custer County | 8,407 | 406 | 10 |
| Laurel | Yellowstone County | 7,251 | 406 | 6 |
| Lewistown | Fergus County | 6,204 | 406 | 8 |
| Sidney | Richland County | 6,031 | 406 | 9 |
| Columbia Falls | Flathead County | 5,713 | 406 | 3 |
| Polson | Lake County | 5,631 | 406 | 4 |
| Hamilton | Ravalli County | 5,383 | 406 | 8 |
| Glendive | Dawson County | 4,760 | 406 | 6 |
| Dillon | Beaverhead County | 4,242 | 406 | 7 |
| Hardin | Big Horn County | 3,719 | 406 | 7 |
| Shelby | Toole County | 3,273 | 406 | 7 |
| Libby | Lincoln County | 3,235 | 406 | 6 |
| Glasgow | Valley County | 3,169 | 406 | 4 |
| Deer Lodge | Powell County | 3,006 | 406 | 3 |
| Cut Bank | Glacier County | 2,988 | 406 | 4 |
| Red Lodge | Carbon County | 2,686 | 406 | 6 |
| Wolf Point | Roosevelt County | 2,522 | 406 | 2 |
| Conrad | Pondera County | 2,395 | 406 | 5 |
| Stevensville | Ravalli County | 2,236 | 406 | 2 |
| Townsend | Broadwater County | 2,209 | 406 | 4 |
| Ronan | Lake County | 2,182 | 406 | 3 |
| Manhattan | Gallatin County | 2,068 | 406 | 4 |
| Colstrip | Rosebud County | 2,063 | 406 | 5 |
| Roundup | Musselshell County | 2,017 | 406 | 4 |
| Columbus | Stillwater County | 1,966 | 406 | 6 |
| Three Forks | Gallatin County | 1,945 | 406 | 2 |
| Malta | Phillips County | 1,853 | 406 | 3 |
| Baker | Fallon County | 1,767 | 406 | 4 |
| Big Timber | Sweet Grass County | 1,681 | 406 | 3 |
| Forsyth | Rosebud County | 1,643 | 406 | 5 |
| Thompson Falls | Sanders County | 1,526 | 406 | 3 |
| Fort Benton | Chouteau County | 1,422 | 406 | 2 |
| Boulder | Jefferson County | 1,305 | 406 | 4 |
| West Yellowstone | Gallatin County | 1,202 | 406 | 3 |
| Whitehall | Jefferson County | 1,116 | 406 | 2 |
| Ennis | Madison County | 1,081 | 406 | 2 |
Places whose NANPA rate center could be matched to a Census place, with at least two exchanges. Sources: NANPA; Census Vintage 2024 estimates.