Counties in Montana
List of Counties in Montana.
| Counties | Population | Area (km2) |
|---|---|---|
| Yellowstone County | 154,162 | 6,854.606 |
| Missoula County | 111,807 | 6,779.338 |
| Gallatin County | 94,720 | 6,837.432 |
| Flathead County | 93,068 | 13,610.948 |
| Cascade County | 82,384 | 7,028.18 |
| Lewis and Clark County | 65,338 | 9,064.474 |
| Ravalli County | 40,823 | 6,221.051 |
| Silver Bow County | 34,523 | 1,863.04 |
| Lake County | 29,017 | 4,289.483 |
| Lincoln County | 19,460 | 9,518.419 |
| Hill County | 16,568 | 7,552.297 |
| Park County | 15,682 | 7,291.079 |
| Glacier County | 13,739 | 7,879.403 |
| Big Horn County | 13,042 | 12,994.977 |
| Custer County | 11,951 | 9,825.701 |
| Jefferson County | 11,512 | 4,298.372 |
| Fergus County | 11,501 | 11,277.817 |
| Sanders County | 11,363 | 7,217.715 |
| Richland County | 11,214 | 5,454.033 |
| Roosevelt County | 11,125 | 6,132.926 |
| Carbon County | 10,340 | 5,342.766 |
| Dawson County | 9,445 | 6,165.977 |
| Beaverhead County | 9,341 | 14,439.557 |
| Rosebud County | 9,329 | 13,026.117 |
| Deer Lodge County | 9,329 | 1,920.21 |
| Stillwater County | 9,318 | 4,682.089 |
| Madison County | 7,712 | 9,331.937 |
| Valley County | 7,630 | 13,119.439 |
| Powell County | 6,993 | 6,050.739 |
| Blaine County | 6,604 | 10,995.617 |
| Pondera County | 6,211 | 4,240.545 |
| Teton County | 6,065 | 5,944.089 |
| Chouteau County | 5,849 | 10,343.044 |
| Broadwater County | 5,692 | 3,206.441 |
| Toole County | 5,138 | 5,048.82 |
| Musselshell County | 4,629 | 4,857.157 |
| Mineral County | 4,275 | 3,169.954 |
| Phillips County | 4,179 | 13,504.655 |
| Sweet Grass County | 3,669 | 4,814.947 |
| Sheridan County | 3,668 | 4,422.262 |
| Granite County | 3,138 | 4,498.264 |
| Fallon County | 3,079 | 4,204.431 |
| Liberty County | 2,369 | 3,750.02 |
| Wheatland County | 2,134 | 3,699.624 |
| Judith Basin County | 2,016 | 4,841.907 |
| Meagher County | 1,937 | 6,208.9 |
| Daniels County | 1,791 | 3,692.338 |
| Powder River County | 1,748 | 8,546.046 |
| McCone County | 1,709 | 6,963.308 |
| Garfield County | 1,290 | 12,557.802 |
| Prairie County | 1,179 | 4,522.496 |
| Carter County | 1,174 | 8,674.403 |
| Wibaux County | 1,121 | 2,306.535 |
| Golden Valley County | 859 | 3,041.125 |
| Treasure County | 700 | 2,550.639 |
| Petroleum County | 506 | 4,343.155 |