Oklahoma Gazetteer
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. | Texas County | 83.9 |
| 2. | Oklahoma County | 77.1 |
| 3. | Tulsa County | 73.2 |
| 4. | Tillman County | 72.8 |
| 5. | Comanche County | 72.6 |
| 6. | Harmon County | 72.3 |
| 7. | Cherokee County | 71.3 |
| 8. | Jackson County | 70.9 |
| 9. | Muskogee County | 70.6 |
| 10. | Adair County | 69.0 |
| 11. | Caddo County | 68.7 |
| 12. | Marshall County | 67.0 |
| 13. | Custer County | 66.5 |
| 14. | Beaver County | 66.0 |
| 15. | McCurtain County | 65.9 |
| 16. | Love County | 65.2 |
| 17. | Choctaw County | 64.8 |
| 18. | Harper County | 63.6 |
| 19. | Okmulgee County | 63.5 |
| 20. | Pontotoc County | 63.4 |
