| County | Black Percentage of Total Population |
| Elmore |  3 |
| Ada | 1 |
| Clark | 1 |
| Power | 1 |
| Latah | 1 |
| Bannock | 1 |
| Owyhee | 1 |
| Fremont | 1 |
| Canyon | 1 |
| Bonneville | 1 |
| Twin Falls | 1 |
| Madison | 1 |
| Cassia | 1 |
| Minidoka | 1 |
| Lincoln | 1 |
| Jerome | 1 |
| Bingham | 1 |
| Nez Perce | 1 |
| Lemhi | 1 |
| Camas | 1 |
| Washington | 0 |
| Payette | 0 |
| Benewah | 0 |
| Lewis | 0 |
| Boundary | 0 |
| Butte | 0 |
| Gooding | 0 |
| Kootenai | 0 |
| Jefferson | 0 |
| Franklin | 0 |
| Bear Lake | 0 |
| Shoshone | 0 |
| Blaine | 0 |
| Boise | 0 |
| Teton | 0 |
| Idaho | 0 |
| Clearwater | 0 |
| Valley | 0 |
| Adams | 0 |
| Oneida | 0 |
| Bonner | 0 |
| Gem | 0 |
| Custer | 0 |
| Caribou | 0 |