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. | Village of Mount Eaton | Wayne | 1.1 |
| 2. | Village of Buckland | Auglaize | 2.6 |
| 3. | Lewistown Census Designated Place | Logan | 3.1 |
| 4. | Oceola Census Designated Place | Crawford | 3.7 |
| 5. | Newport Census Designated Place | Washington | 3.7 |
| 6. | Parkman Census Designated Place | Geauga | 3.8 |
| 7. | Village of Fort Loramie | Shelby | 3.9 |
| 8. | Berlin Census Designated Place | Holmes | 4.2 |
| 9. | Village of Ottoville | Putnam | 4.3 |
| 10. | Village of Fort Jennings | Putnam | 4.8 |
| 11. | Village of Put-in-Bay | Ottawa | 4.9 |
| 12. | Walnut Creek Census Designated Place | Holmes | 5.2 |
| 13. | Village of Sarahsville | Noble | 5.3 |
| 14. | Village of Hanoverton | Columbiana | 5.3 |
| 15. | Limaville Census Designated Place | Stark | 5.3 |
| 16. | Village of Ludlow Falls | Miami | 5.5 |
| 17. | Newport Census Designated Place | Shelby | 5.7 |
| 18. | Village of Miller City | Putnam | 5.7 |
| 19. | Village of West Farmington | Trumbull | 5.8 |
| 20. | Village of Coalton | Jackson | 5.8 |