| County | American Indian Percentage of Total Population |
| Jefferson |  18 |
| Wasco | 5 |
| Klamath | 5 |
| Umatilla | 4 |
| Lincoln | 4 |
| Harney | 4 |
| Coos | 3 |
| Marion | 3 |
| Polk | 2 |
| Sherman | 2 |
| Curry | 2 |
| Lake | 2 |
| Yamhill | 2 |
| Malheur | 2 |
| Douglas | 2 |
| Morrow | 2 |
| Jackson | 2 |
| Wheeler | 2 |
| Tillamook | 2 |
| Columbia | 2 |
| Multnomah | 2 |
| Linn | 2 |
| Josephine | 2 |
| Crook | 1 |
| Lane | 1 |
| Grant | 1 |
| Baker | 1 |
| Union | 1 |
| Clatsop | 1 |
| Gilliam | 1 |
| Washington | 1 |
| Hood River | 1 |
| Clackamas | 1 |
| Deschutes | 1 |
| Benton | 1 |
| Wallowa | 1 |