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. | Nobles County | 73.6 |
| 2. | Ramsey County | 62.7 |
| 3. | Mahnomen County | 61.9 |
| 4. | Watonwan County | 59.7 |
| 5. | Hennepin County | 55.4 |
| 6. | Beltrami County | 45.5 |
| 7. | Dakota County | 45.0 |
| 8. | Mower County | 42.5 |
| 9. | Scott County | 40.3 |
| 10. | Olmsted County | 40.2 |
| 11. | Anoka County | 39.8 |
| 12. | Rice County | 38.8 |
| 13. | Lyon County | 37.1 |
| 14. | Washington County | 35.8 |
| 15. | Kandiyohi County | 35.6 |
| 16. | Cottonwood County | 34.8 |
| 17. | Pipestone County | 34.8 |
| 18. | Chippewa County | 33.6 |
| 19. | Freeborn County | 33.3 |
| 20. | Cass County | 32.7 |
