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. | Stewart County | 86.6 |
| 2. | Gwinnett County | 80.5 |
| 3. | Atkinson County | 74.8 |
| 4. | Whitfield County | 71.4 |
| 5. | Liberty County | 71.0 |
| 6. | Colquitt County | 70.8 |
| 7. | Hall County | 70.1 |
| 8. | Long County | 69.8 |
| 9. | Cobb County | 69.5 |
| 10. | Echols County | 69.1 |
| 11. | Evans County | 68.0 |
| 12. | Chattahoochee County | 67.6 |
| 13. | Fulton County | 67.5 |
| 14. | Telfair County | 67.5 |
| 15. | DeKalb County | 67.0 |
| 16. | Tift County | 66.8 |
| 17. | Douglas County | 66.7 |
| 18. | Clarke County | 65.5 |
| 19. | Muscogee County | 65.5 |
| 20. | Henry County | 64.9 |
