Idaho counties ranked by the diversity index, the chance that two public school students picked at random from the county belong to different racial or ethnic groups. Counties need at least 3 schools and 1,000 students to qualify. The median ranked county is at 38.4%.
| # | County | State | Diversity index |
|---|---|---|---|
| 1 | Benewah County | ID | 55.3% |
| 2 | Canyon County | ID | 54.3% |
| 3 | Blaine County | ID | 53.2% |
| 4 | Gooding County | ID | 52.9% |
| 5 | Power County | ID | 52.6% |
| 6 | Elmore County | ID | 52.3% |
| 7 | Minidoka County | ID | 51.3% |
| 8 | Jerome County | ID | 50.2% |
| 9 | Cassia County | ID | 49.5% |
| 10 | Owyhee County | ID | 48.1% |
| 11 | Payette County | ID | 46.5% |
| 12 | Teton County | ID | 46.0% |
| 13 | Twin Falls County | ID | 45.4% |
| 14 | Ada County | ID | 43.5% |
| 15 | Bingham County | ID | 43.3% |
| 16 | Washington County | ID | 41.0% |
| 17 | Bannock County | ID | 40.2% |
| 18 | Bonneville County | ID | 38.4% |
| 19 | Fremont County | ID | 37.3% |
| 20 | Nez Perce County | ID | 37.0% |
| 21 | Gem County | ID | 35.2% |
| 22 | Oneida County | ID | 26.9% |
| 23 | Jefferson County | ID | 26.8% |
| 24 | Clearwater County | ID | 25.6% |
| 25 | Kootenai County | ID | 25.4% |
| 26 | Madison County | ID | 24.5% |
| 27 | Latah County | ID | 24.3% |
| 28 | Boundary County | ID | 23.2% |
| 29 | Franklin County | ID | 22.9% |
| 30 | Bonner County | ID | 21.8% |
| 31 | Valley County | ID | 21.7% |
| 32 | Idaho County | ID | 19.2% |
| 33 | Caribou County | ID | 17.4% |
| 34 | Shoshone County | ID | 14.1% |
| 35 | Bear Lake County | ID | 12.9% |