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. | Village of Farina | Fayette | 0.8 |
| 2. | Village of Campbell Hill | Jackson | 1.2 |
| 3. | Village of West Point | Hancock | 1.2 |
| 4. | Village of Oakford | Menard | 1.5 |
| 5. | Village of Ohlman | Montgomery | 1.6 |
| 6. | Village of Fieldon | Jersey | 1.7 |
| 7. | Village of Fillmore | Montgomery | 1.9 |
| 8. | Village of Perry | Pike | 1.9 |
| 9. | Village of Batchtown | Calhoun | 2.0 |
| 10. | Village of Waynesville | De Witt | 2.4 |
| 11. | Village of Augusta | Hancock | 2.5 |
| 12. | Village of Calhoun | Richland | 2.5 |
| 13. | Village of London Mills | Fulton | 2.5 |
| 14. | Town of Sigel | Shelby | 2.6 |
| 15. | Village of Roseville | Warren | 2.7 |
| 16. | Village of Kampsville | Calhoun | 2.7 |
| 17. | Village of Saint Peter | Fayette | 2.8 |
| 18. | Village of Raleigh | Saline | 2.8 |
| 19. | Village of Farmersville | Montgomery | 2.9 |
| 20. | Village of Venedy | Washington | 3.1 |
