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 | 10.2 |
| 2. | Delaware County | 11.6 |
| 3. | Van Buren County | 12.2 |
| 4. | Butler County | 12.4 |
| 5. | Buchanan County | 12.9 |
| 6. | Grundy County | 12.9 |
| 7. | Adams County | 13.3 |
| 8. | Davis County | 13.3 |
| 9. | Harrison County | 13.5 |
| 10. | Clayton County | 13.6 |
| 11. | Ringgold County | 13.8 |
| 12. | Appanoose County | 13.9 |
| 13. | Monroe County | 14.1 |
| 14. | Keokuk County | 14.2 |
| 15. | Jackson County | 14.6 |
| 16. | Audubon County | 14.7 |
| 17. | Benton County | 14.7 |
| 18. | Bremer County | 15.2 |
| 19. | Madison County | 15.2 |
| 20. | Adair County | 15.6 |
