| County | Black Population |
| Ada |  4,906 |
| Canyon | 1,357 |
| Bonneville | 748 |
| Elmore | 736 |
| Bannock | 669 |
| Kootenai | 569 |
| Twin Falls | 471 |
| Latah | 342 |
| Bingham | 227 |
| Madison | 226 |
| Nez Perce | 198 |
| Cassia | 140 |
| Minidoka | 121 |
| Jerome | 112 |
| Owyhee | 92 |
| Fremont | 91 |
| Payette | 91 |
| Bonner | 81 |
| Jefferson | 80 |
| Power | 70 |
| Blaine | 63 |
| Gooding | 61 |
| Idaho | 49 |
| Boundary | 43 |
| Washington | 40 |
| Lemhi | 39 |
| Franklin | 38 |
| Shoshone | 38 |
| Benewah | 37 |
| Gem | 33 |
| Teton | 30 |
| Lincoln | 26 |
| Clearwater | 26 |
| Boise | 20 |
| Valley | 19 |
| Bear Lake | 18 |
| Lewis | 16 |
| Butte | 11 |
| Custer | 9 |
| Oneida | 8 |
| Clark | 8 |
| Adams | 8 |
| Caribou | 7 |
| Camas | 5 |