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. | Dakota County | 79.1 |
| 2. | Colfax County | 78.7 |
| 3. | Dawson County | 71.4 |
| 4. | Saline County | 66.3 |
| 5. | Hall County | 65.9 |
| 6. | Douglas County | 57.7 |
| 7. | Thurston County | 57.5 |
| 8. | Scotts Bluff County | 56.3 |
| 9. | Platte County | 53.1 |
| 10. | Madison County | 48.1 |
| 11. | Dodge County | 44.1 |
| 12. | Johnson County | 43.2 |
| 13. | Chase County | 42.8 |
| 14. | Box Butte County | 42.6 |
| 15. | Morrill County | 42.4 |
| 16. | Dixon County | 42.0 |
| 17. | Sarpy County | 41.9 |
| 18. | Lancaster County | 40.2 |
| 19. | Sheridan County | 39.0 |
| 20. | Adams County | 37.2 |
