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 Almont | Morton | 1.4 |
| 2. | City of Fessenden | Wells | 1.8 |
| 3. | City of Strasburg | Emmons | 2.0 |
| 4. | City of Abercrombie | Richland | 2.7 |
| 5. | City of Munich | Cavalier | 2.8 |
| 6. | City of Marion | LaMoure | 2.9 |
| 7. | City of Bowdon | Wells | 3.0 |
| 8. | City of South Heart | Stark | 3.0 |
| 9. | City of Sykeston | Wells | 3.3 |
| 10. | City of Flasher | Morton | 3.3 |
| 11. | City of Litchville | Barnes | 3.5 |
| 12. | City of Cooperstown | Griggs | 3.7 |
| 13. | City of Harwood | Cass | 3.9 |
| 14. | City of Mott | Hettinger | 4.1 |
| 15. | City of Medora | Billings | 4.5 |
| 16. | Harmon Census Designated Place | Morton | 4.5 |
| 17. | City of Carpio | Ward | 4.7 |
| 18. | City of Oxbow | Cass | 5.3 |
| 19. | City of Gackle | Logan | 5.6 |
| 20. | City of Streeter | Stutsman | 5.7 |
