Iowa 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. | Wayne County | 9.7 |
| 2. | Butler County | 11.1 |
| 3. | Davis County | 11.3 |
| 4. | Grundy County | 11.3 |
| 5. | Delaware County | 11.4 |
| 6. | Van Buren County | 11.7 |
| 7. | Buchanan County | 12.0 |
| 8. | Ringgold County | 12.9 |
| 9. | Monroe County | 13.0 |
| 10. | Audubon County | 13.1 |
| 11. | Adams County | 13.2 |
| 12. | Mitchell County | 13.5 |
| 13. | Harrison County | 13.7 |
| 14. | Keokuk County | 13.7 |
| 15. | Clayton County | 13.7 |
| 16. | Appanoose County | 13.8 |
| 17. | Benton County | 14.1 |
| 18. | Jackson County | 14.3 |
| 19. | Adair County | 14.4 |
| 20. | Madison County | 15.0 |
