Montana is the fourth-biggest state by physical size and has the eighth smallest population. Montana is divided into 56 counties and contains 129 incorporated municipalities, which consist of cities and towns. The largest city is Billings with an estimated population of 117,116 and the smallest city is Hobson with a population of 179. Bozeman is the fastest growing city in Montana as of 2022, Since 2010 Bozeman increased its population by 16,853.
Billings is the largest city in Montana, situated in the southern central part of Montana in Yellowstone Country, Billings has an approximate population of 117,116, and the Metropolitan Area has a population of 184,167, measuring up at around 43.5 square miles. Billings was founded in 1877 in the Yellowstone Valley, by a lawyer and landowner named Frederick H. Billings.
Missoula is the second-largest city in Montana, situated in Missoula County in the west of Montana and is actually the county seat. Missoula has an approximate population of 73,489, measuring up at around 29.08 square miles. Missoula was founded in 1866 as Hellgate Trading Post while still part of Washington Territory.
Great Falls is the third biggest city in Montana and the county seat of Cascade County. Great Falls has an approximate population of 60,442, and the Metropolitan Area has a population of 84,414, measuring up at around 22.9 square miles. Great Falls was incorporated on November 28, 1888, and was founded by Paris Gibson.
Hobson is one of the smallest cities in Montana. Hobson has an approximated population of 179, measuring up at around 0.24 square miles. Hobson was named after the owner of the new townsite by The railroad.
List of Cities in Montana
| City Name | Type | County | Population 2020 |
| Billings | City | Yellowstone | 117,116 |
| Missoula | City | Missoula | 73,489 |
| Great Falls | City | Cascade | 60,442 |
| Bozeman | City | Gallatin | 53,293 |
| Helena | City | Lewis and Clark | 32,091 |
| Kalispell | City | Flathead | 24,558 |
| Belgrade | City | Gallatin | 10,460 |
| Havre | City | Hill | 9,362 |
| Miles City | City | Custer | 8,354 |
| Livingston | City | Park | 8,040 |
| Whitefish | City | Flathead | 7,751 |
| Laurel | City | Yellowstone | 7,222 |
| Sidney | City | Richland | 6,346 |
| Lewistown | City | Fergus | 5,952 |
| Columbia Falls | City | Flathead | 5,308 |
| Polson | City | Lake | 5,148 |
| Glendive | City | Dawson | 4,873 |
| Hamilton | City | Ravalli | 4,659 |
| Dillon | City | Beaverhead | 3,880 |
| Hardin | City | Big Horn | 3,818 |
| Glasgow | City | Valley | 3,202 |
| Shelby | City | Toole | 3,169 |
| Cut Bank | City | Glacier | 3,056 |
| Deer Lodge | City | Powell | 2,938 |
| Libby | City | Lincoln | 2,775 |
| Wolf Point | City | Roosevelt | 2,517 |
| Conrad | City | Pondera | 2,318 |
| Red Lodge | City | Carbon | 2,257 |
| Colstrip | City | Rosebud | 2,096 |
| Three Forks | City | Gallatin | 1,989 |
| Ronan | City | Lake | 1,955 |
| East Helena | City | Lewis and Clark | 1,944 |
| Malta | City | Phillips | 1,860 |
| Baker | City | Fallon | 1,802 |
| Townsend | City | Broadwater | 1,787 |
| Roundup | City | Musselshell | 1,742 |
| Choteau | City | Teton | 1,721 |
| Plentywood | City | Sheridan | 1,669 |
| Big Timber | City | Sweet Grass | 1,650 |
| Forsyth | City | Rosebud | 1,647 |
| Fort Benton | City | Chouteau | 1,449 |
| Thompson Falls | City | Sanders | 1,336 |
| Chinook | City | Blaine | 1,185 |
| Scobey | City | Daniels | 999 |
| Harlowton | City | Wheatland | 955 |
| White Sulphur Springs | City | Meagher | 955 |
| Troy | City | Lincoln | 797 |
| Harlem | City | Blaine | 769 |
| Poplar | City | Roosevelt | 758 |
| Hobson | City | Judith Basin | 179 |
| Judith Gap | Town | Wheatland | 110 |
