| County | American Indian Population |
| Ada |  3,680 |
| Bingham | 3,228 |
| Canyon | 3,101 |
| Bannock | 2,845 |
| Nez Perce | 2,256 |
| Kootenai | 1,992 |
| Bonneville | 1,176 |
| Twin Falls | 942 |
| Benewah | 805 |
| Owyhee | 527 |
| Jerome | 517 |
| Idaho | 457 |
| Minidoka | 402 |
| Elmore | 394 |
| Bonner | 364 |
| Jefferson | 347 |
| Payette | 340 |
| Cassia | 326 |
| Blaine | 317 |
| Latah | 304 |
| Gooding | 259 |
| Boundary | 238 |
| Power | 211 |
| Lewis | 206 |
| Shoshone | 203 |
| Clearwater | 180 |
| Madison | 151 |
| Gem | 134 |
| Washington | 131 |
| Fremont | 117 |
| Franklin | 102 |
| Valley | 95 |
| Boise | 82 |
| Lincoln | 79 |
| Lemhi | 70 |
| Teton | 50 |
| Adams | 43 |
| Bear Lake | 41 |
| Caribou | 41 |
| Custer | 26 |
| Oneida | 21 |
| Clark | 19 |
| Butte | 16 |
| Camas | 10 |