The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
| County | Diversity Index | |
|---|---|---|
| 1. | Fillmore County | 13.2 |
| 2. | Houston County | 13.3 |
| 3. | Pope County | 13.9 |
| 4. | Morrison County | 14.1 |
| 5. | Lincoln County | 14.6 |
| 6. | Lake County | 14.7 |
| 7. | Kittson County | 15.4 |
| 8. | Kanabec County | 15.8 |
| 9. | Douglas County | 15.8 |
| 10. | Aitkin County | 16.6 |
| 11. | Crow Wing County | 16.6 |
| 12. | Lake of the Woods County | 16.6 |
| 13. | Grant County | 18.2 |
| 14. | Wadena County | 18.6 |
| 15. | Wabasha County | 18.9 |
| 16. | Big Stone County | 19.6 |
| 17. | Koochiching County | 20.6 |
| 18. | Lac qui Parle County | 21.0 |
| 19. | Marshall County | 21.5 |
| 20. | Red Lake County | 21.5 |