The graph below ranks each Montana County by total of American Indian residents according to the 2012 census estimates.
Montana total of American Indian population by county
| County | American Indian Population |
| Glacier |  8,691 |
| Big Horn | 8,345 |
| Lake | 6,676 |
| Yellowstone | 6,532 |
| Roosevelt | 6,487 |
| Cascade | 3,680 |
| Hill | 3,627 |
| Rosebud | 3,301 |
| Blaine | 3,289 |
| Missoula | 3,000 |
| Lewis and Clark | 1,362 |
| Chouteau | 1,202 |
| Flathead | 1,100 |
| Gallatin | 927 |
| Pondera | 899 |
| Valley | 720 |
| Silver Bow | 689 |
| Sanders | 490 |
| Ravalli | 406 |
| Powell | 333 |
| Phillips | 330 |
| Deer Lodge | 315 |
| Toole | 272 |
| Custer | 225 |
| Lincoln | 195 |
| Richland | 184 |
| Dawson | 176 |
| Park | 172 |
| Jefferson | 171 |
| Beaverhead | 150 |
| Fergus | 149 |
| Teton | 103 |
| Carbon | 101 |
| Broadwater | 81 |
| Stillwater | 74 |
| Mineral | 71 |
| Sheridan | 57 |
| Musselshell | 56 |
| Madison | 46 |
| Daniels | 39 |
| Powder River | 28 |
| Sweet Grass | 22 |
| Fallon | 18 |
| Treasure | 17 |
| Wheatland | 17 |
| Judith Basin | 16 |
| Granite | 16 |
| Carter | 12 |
| McCone | 10 |
| Meagher | 10 |
| Golden Valley | 8 |
| Wibaux | 5 |
| Garfield | 5 |
| Liberty | 5 |
| Prairie | 3 |
| Petroleum | 0 |