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. | Smith County | 15.8 |
| 2. | Republic County | 16.3 |
| 3. | Nemaha County | 17.0 |
| 4. | Trego County | 17.3 |
| 5. | Marshall County | 17.4 |
| 6. | Woodson County | 17.5 |
| 7. | Jewell County | 17.8 |
| 8. | Mitchell County | 17.9 |
| 9. | Anderson County | 18.4 |
| 10. | Osborne County | 18.8 |
| 11. | Phillips County | 19.0 |
| 12. | Osage County | 19.4 |
| 13. | Ottawa County | 19.8 |
| 14. | Rooks County | 20.0 |
| 15. | Rush County | 20.0 |
| 16. | Lincoln County | 20.1 |
| 17. | Linn County | 20.7 |
| 18. | Coffey County | 21.3 |
| 19. | Cloud County | 21.7 |
| 20. | Decatur County | 21.7 |