| MONTANA COUNTIES AND COUNTY SEATS | ||||
| 1990 Census of Population | ||||
| COUNTY | POPULATION | COUNTY SEAT | POPULATION | |
| Montana | 799,065 | |||
| Beaverhead | 8,424 | Dillon* | 4,001 | |
| Big Horn | 11,337 | Hardin | 2,940 | |
| Blaine | 6,728 | Chinook | 1,512 | |
| Broadwater | 3,318 | Townsend | 1,635 | |
| Carbon | 8,080 | Red Lodge | 1,958 | |
| Carter | 1,503 | Ekalaka | 439 | |
| Cascade | 77,691 | Great Falls* | 55,125 | |
| Chouteau | 5,452 | Fort Benton | 1,660 | |
| Custer | 11,697 | Miles City | 8,461 | |
| Daniels | 2,266 | Scobey | 1,154 | |
| Dawson | 9,505 | Glendive | 4,802 | |
| Deer Lodge* | 10,356 | Anaconda | ** | |
| Fallon | 3,103 | Baker | 1,818 | |
| Fergus | 12,083 | Lewistown* | 6,097 | |
| Flathead | 59,218 | Kalispell | 11,917 | |
| Gallatin | 50,463 | Bozeman | 22,660 | |
| Garfield | 1,589 | Jordan | 494 | |
| Glacier | 12,121 | Cut Bank | 3,329 | |
| Golden Valley | 912 | Ryegate | 260 | |
| Granite | 2,548 | Philipsburg | 925 | |
| Hill | 17,654 | Havre | 10,201 | |
| Jefferson | 7,939 | Boulder | 1,316 | |
| Judith Basin | 2,282 | Stanford | 529 | |
| Lake | 21,041 | Polson* | 3,291 | |
| Lewis & Clark | 47,495 | Helena* | 24,609 | |
| Liberty | 2,295 | Chester | 942 | |
| Lincoln | 17,481 | Libby | 2,532 | |
| McCone | 2,276 | Circle | 805 | |
| Madison | 5,989 | Virginia City | 142 | |
| Meagher | 1,819 | White Sulphur Springs | 963 | |
| Mineral | 3,315 | Superior | 881 | |
| Missoula | 78,687 | Missoula | 42,918 | |
| Musselshell | 4,106 | Roundup | 1,808 | |
| Park* | 14,484 | Livingston | 6,701 | |
| Petroleum | 519 | Winnett | 188 | |
| Phillips | 5,163 | Malta | 2,340 | |
| Pondera | 6,433 | Conrad | 2,891 | |
| Powder River | 2,090 | Broadus | 572 | |
| Powell | 6,620 | Deer Lodge | 3,378 | |
| Prairie | 1,383 | Terry | 659 | |
| Ravalli | 25,010 | Hamilton | 2,737 | |
| Richland | 10,716 | Sidney | 5,217 | |
| Roosevelt | 10,999 | Wolf Point | 2,880 | |
| Rosebud | 10,505 | Forsyth | 2,178 | |
| Sanders | 8,669 | Thompson Falls | 1,319 | |
| Sheridan | 4,732 | Plentywood | 2,136 | |
| Silver Bow | 33,941 | Butte-Silver Bow | 33,336 | |
| Stillwater | 6,536 | Columbus | 1,573 | |
| Sweet Grass | 3,154 | Big Timber | 1,557 | |
| Teton | 6,271 | Choteau | 1,741 | |
| Toole | 5,046 | Shelby | 2,763 | |
| Treasure | 874 | Hysham | 361 | |
| Valley | 8,239 | Glasgow | 3,572 | |
| Wheatland | 2,246 | Harlowton | 1,049 | |
| Wibaux | 1,191 | Wibaux | 628 | |
| Yellowstone | 113,419 | Billings* | 81,125 | |
| Yellowstone Nat'l Park | 52 | |||
| * Table revised July 1992, November 1992 and March 1993 to reflect U.S. | ||||
| Bureau of the Census corrected population totals. | ||||
| ** Area with a legally designated city-county government functioning as a city. | ||||
| Source: U.S. Bureau of the Census, March 1993 | ||||