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. | Sevier County | 76.3 |
| 2. | Bradley County | 71.0 |
| 3. | Hempstead County | 68.4 |
| 4. | Desha County | 62.8 |
| 5. | Pulaski County | 62.3 |
| 6. | Chicot County | 61.1 |
| 7. | St. Francis County | 60.8 |
| 8. | Howard County | 60.6 |
| 9. | Sebastian County | 60.5 |
| 10. | Washington County | 58.9 |
| 11. | Monroe County | 57.3 |
| 12. | Dallas County | 57.1 |
| 13. | Mississippi County | 56.3 |
| 14. | Benton County | 56.2 |
| 15. | Crittenden County | 55.9 |
| 16. | Ouachita County | 55.7 |
| 17. | Lee County | 55.7 |
| 18. | Union County | 54.9 |
| 19. | Nevada County | 54.5 |
| 20. | Jefferson County | 54.5 |
