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. | Hancock County | 6.1 |
| 2. | Pickett County | 7.2 |
| 3. | Scott County | 7.2 |
| 4. | Van Buren County | 7.6 |
| 5. | Fentress County | 8.4 |
| 6. | Campbell County | 8.4 |
| 7. | Union County | 8.6 |
| 8. | Grundy County | 8.7 |
| 9. | Overton County | 9.4 |
| 10. | Claiborne County | 10.5 |
| 11. | Jackson County | 11.3 |
| 12. | Hawkins County | 11.7 |
| 13. | Polk County | 11.8 |
| 14. | Carter County | 12.5 |
| 15. | Meigs County | 12.7 |
| 16. | Johnson County | 13.8 |
| 17. | Clay County | 13.8 |
| 18. | Cannon County | 14.5 |
| 19. | Morgan County | 14.6 |
| 20. | Lawrence County | 14.9 |
