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Below you will find the Montana list of cities and towns. All population numbers are from the 2010 Census. Please let us know if you find any missing or erroneous information in this list.
| City | County | Population |
| Billings | Yellowstone | 106,954 |
| Missoula | Missoula | 66,789 |
| Great Falls | Cascade | 58,505 |
| Bozeman | Gallatin | 37,280 |
| Butte | Silver Bow | 34,525 |
| Helena | Lewis and Clark | 28,190 |
| Kalispell | Flathead | 19,927 |
| Havre | Hill | 9,310 |
| Anaconda | Deer Lodge | 9,298 |
| Miles City | Custer | 8,123 |
| Belgrade | Gallatin | 7,389 |
| Livingston | Park | 7,044 |
| Laurel | Yellowstone | 6,781 |
| Whitefish | Flathead | 6,357 |
| Lewistown | Fergus | 5,901 |
| Sidney | Richland | 5,191 |
| Glendive | Dawson | 4,935 |
| Columbia Falls | Flathead | 4,688 |
| Polson | Lake | 4,598 |
| Hamilton | Ravalli | 4,348 |
| Dillon | Beaverhead | 4,134 |
| Hardin | Big Horn | 3,505 |
| Shelby | Toole | 3,376 |
| Glasgow | Valley | 3,250 |
| Deer Lodge | Powell | 3,111 |
| Cut Bank | Glacier | 2,869 |
| Libby | Lincoln | 2,628 |
| Wolf Point | Roosevelt | 2,621 |
| Conrad | Pondera | 2,570 |
| Colstrip | Rosebud | 2,214 |
| Red Lodge | Carbon | 2,125 |
| Malta | Phillips | 1,997 |
| East Helena | Lewis and Clark | 1,984 |
| Columbus | Stillwater | 1,893 |
| Townsend | Broadwater | 1,878 |
| Ronan | Lake | 1,871 |
| Three Forks | Gallatin | 1,869 |
| Stevensville | Ravalli | 1,809 |
| Roundup | Musselshell | 1,788 |
| Forsyth | Rosebud | 1,777 |
| Baker | Fallon | 1,741 |
| Plentywood | Sheridan | 1,734 |
| Choteau | Teton | 1,684 |
| Big Timber | Sweet Grass | 1,641 |
| Manhattan | Gallatin | 1,520 |
| Fort Benton | Chouteau | 1,464 |
| Thompson Falls | Sanders | 1,313 |
| West Yellowstone | Gallatin | 1,271 |
| Chinook | Blaine | 1,203 |
| Boulder | Jefferson | 1,183 |
| Plains | Sanders | 1,048 |
| Whitehall | Jefferson | 1,038 |
| Eureka | Lincoln | 1,037 |
| Scobey | Daniels | 1,017 |
| Browning | Glacier | 1,016 |
| Harlowton | Wheatland | 997 |
| White Sulphur Springs | Meagher | 939 |
| Troy | Lincoln | 938 |
| Pinesdale | Ravalli | 917 |
| Chester | Liberty | 847 |
| St. Ignatius | Lake | 842 |
| Fairview | Richland | 840 |
| Ennis | Madison | 838 |
| Philipsburg | Granite | 820 |
| Superior | Mineral | 812 |
| Poplar | Roosevelt | 810 |
| Harlem | Blaine | 808 |
| Darby | Ravalli | 720 |
| Culbertson | Roosevelt | 714 |
| Bridger | Carbon | 708 |
| Fairfield | Teton | 708 |
| Cascade | Cascade | 685 |
| Walkerville | Silver Bow | 675 |
| Sheridan | Madison | 642 |
| Circle | McCone | 615 |
| Terry | Prairie | 605 |
| Big Sandy | Chouteau | 598 |
| Belt | Cascade | 597 |
| Joliet | Carbon | 595 |
| Wibaux | Wibaux | 589 |
| Hot Springs | Sanders | 544 |
| Geyser | Judith Basin | 527 |
| Valier | Pondera | 509 |
| Broadus | Powder River | 468 |
| Fromberg | Carbon | 438 |
| Lodge Grass | Big Horn | 428 |
| Alberton | Mineral | 420 |
| Stanford | Judith Basin | 401 |
| Sunburst | Toole | 375 |
| Twin Bridges | Madison | 375 |
| Jordan | Garfield | 343 |
| Ekalaka | Carter | 332 |
| Dutton | Teton | 316 |
| Hysham | Treasure | 312 |
| Drummond | Granite | 309 |
| Nashua | Valley | 290 |
| Clyde Park | Park | 288 |
| Geraldine | Chouteau | 261 |
| Brockton | Roosevelt | 255 |
| Denton | Fergus | 255 |
| Ryegate | Golden Valley | 245 |
| Fort Peck | Valley | 233 |
| Medicine Lake | Sheridan | 225 |
| Lima | Beaverhead | 221 |
| Hobson | Judith Basin | 215 |
| Bainville | Roosevelt | 208 |
| Winifred | Fergus | 208 |
| Saco | Phillips | 197 |
| Moore | Fergus | 193 |
| Broadview | Yellowstone | 192 |
| Virginia City | Madison | 190 |
| Lavina | Golden Valley | 187 |
| Froid | Roosevelt | 185 |
| Winnett | Petroleum | 182 |
| Richey | Dawson | 177 |
| Westby | Sheridan | 168 |
| Plevna | Fallon | 162 |
| Kevin | Toole | 154 |
| Judith Gap | Wheatland | 126 |
| Dodson | Phillips | 124 |
| Hingham | Hill | 118 |
| Grass Range | Fergus | 110 |
| Rexford | Lincoln | 105 |
| Melstone | Musselshell | 96 |
| Opheim | Valley | 85 |
| Bearcreek | Carbon | 79 |
| Flaxville | Daniels | 71 |
| Neihart | Cascade | 51 |
| Outlook | Sheridan | 47 |
| Ismay | Custer | 19 |
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