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. | Russell County | 61.8 |
| 2. | Barbour County | 60.1 |
| 3. | Jefferson County | 59.0 |
| 4. | Montgomery County | 56.9 |
| 5. | Mobile County | 56.5 |
| 6. | Pike County | 56.1 |
| 7. | Pickens County | 56.0 |
| 8. | Conecuh County | 55.8 |
| 9. | Chambers County | 55.7 |
| 10. | Franklin County | 55.7 |
| 11. | Marengo County | 55.5 |
| 12. | Escambia County | 55.4 |
| 13. | Monroe County | 55.1 |
| 14. | Tuscaloosa County | 54.8 |
| 15. | Bullock County | 54.8 |
| 16. | Butler County | 54.8 |
| 17. | Madison County | 54.6 |
| 18. | Clarke County | 53.4 |
| 19. | Coffee County | 53.0 |
| 20. | Talladega County | 52.0 |
