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 Lumpkin | Stewart | 95.4 |
| 2. | City of Norcross | Gwinnett | 91.6 |
| 3. | City of Doraville | DeKalb | 90.0 |
| 4. | City of Chamblee | DeKalb | 87.5 |
| 5. | City of Omega | Tift | 87.3 |
| 6. | Fair Oaks Census Designated Place | Cobb | 86.5 |
| 7. | City of Forest Park | Clayton | 85.1 |
| 8. | City of Hapeville | Fulton | 85.0 |
| 9. | City of Lilburn | Gwinnett | 85.0 |
| 10. | City of Gainesville | Hall | 84.6 |
| 11. | City of Pearson | Atkinson | 83.5 |
| 12. | City of Lawrenceville | Gwinnett | 81.8 |
| 13. | Lakeview Estates Census Designated Place | Rockdale | 80.6 |
| 14. | City of Dalton | Whitfield | 79.9 |
| 15. | City of Duluth | Gwinnett | 79.3 |
| 16. | City of Cornelia | Habersham | 78.9 |
| 17. | City of Buford | Gwinnett | 78.4 |
| 18. | East Newnan Census Designated Place | Coweta | 78.1 |
| 19. | City of Cedartown | Polk | 77.2 |
| 20. | City of Marietta | Cobb | 77.0 |
