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.
| Name | County | Diversity Index | |
|---|---|---|---|
| 1. | City of Conde | Spink | 3.7 |
| 2. | Town of Lesterville | Yankton | 4.3 |
| 3. | City of Menno | Hutchinson | 5.9 |
| 4. | Bath Census Designated Place | Brown | 6.0 |
| 5. | Lake Madison Census Designated Place | Lake | 6.1 |
| 6. | Town of Henry | Codington | 6.4 |
| 7. | Vale Census Designated Place | Butte | 7.4 |
| 8. | Village of Wentworth | Lake | 7.6 |
| 9. | City of White | Brookings | 7.7 |
| 10. | Town of Tabor | Bon Homme | 8.2 |
| 11. | City of Doland | Spink | 8.5 |
| 12. | Town of South Shore | Codington | 8.7 |
| 13. | City of Hosmer | Edmunds | 8.8 |
| 14. | Mina Census Designated Place | Edmunds | 9.1 |
| 15. | Town of Dimock | Hutchinson | 9.3 |
| 16. | Town of Frederick | Brown | 9.4 |
| 17. | City of Hecla | Brown | 9.5 |
| 18. | Parmelee Census Designated Place | Todd | 9.5 |
| 19. | Town of Tulare | Spink | 9.8 |
| 20. | City of Colton | Minnehaha | 10.1 |