| County | Black Population |
| Yellowstone |  1,300 |
| Cascade | 875 |
| Missoula | 443 |
| Flathead | 245 |
| Gallatin | 212 |
| Lewis and Clark | 169 |
| Park | 76 |
| Lake | 74 |
| Glacier | 71 |
| Silver Bow | 71 |
| Ravalli | 54 |
| Big Horn | 52 |
| Powell | 44 |
| Lincoln | 29 |
| Carbon | 28 |
| Dawson | 25 |
| Rosebud | 25 |
| Hill | 24 |
| Sanders | 21 |
| Broadwater | 18 |
| Stillwater | 18 |
| Beaverhead | 18 |
| Deer Lodge | 18 |
| Roosevelt | 16 |
| Blaine | 15 |
| Custer | 14 |
| Jefferson | 13 |
| Teton | 13 |
| Fergus | 12 |
| Richland | 10 |
| Valley | 10 |
| Toole | 10 |
| Mineral | 8 |
| Phillips | 7 |
| McCone | 6 |
| Sheridan | 6 |
| Pondera | 6 |
| Chouteau | 5 |
| Madison | 5 |
| Musselshell | 5 |
| Daniels | 5 |
| Wheatland | 5 |
| Sweet Grass | 3 |
| Fallon | 3 |
| Wibaux | 2 |
| Treasure | 1 |
| Carter | 1 |
| Judith Basin | 1 |
| Prairie | 1 |
| Garfield | 1 |
| Powder River | 0 |
| Petroleum | 0 |
| Golden Valley | 0 |
| Liberty | 0 |
| Meagher | 0 |
| Yellowstone National Park | 0 |
| Granite | 0 |