South Dakota Gazetteer
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. | Mellette County | 57.8 |
| 2. | Bennett County | 57.5 |
| 3. | Jackson County | 57.4 |
| 4. | Lyman County | 56.3 |
| 5. | Charles Mix County | 55.0 |
| 6. | Roberts County | 54.4 |
| 7. | Corson County | 53.6 |
| 8. | Ziebach County | 47.4 |
| 9. | Beadle County | 46.3 |
| 10. | Dewey County | 45.3 |
| 11. | Moody County | 43.6 |
| 12. | Marshall County | 41.6 |
| 13. | Pennington County | 40.8 |
| 14. | Minnehaha County | 40.5 |
| 15. | Tripp County | 38.3 |
| 16. | Hughes County | 37.3 |
| 17. | Buffalo County | 35.8 |
| 18. | Walworth County | 33.5 |
| 19. | Brule County | 32.9 |
| 20. | Aurora County | 32.1 |
