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. | City of Noel | McDonald | 83.6 |
| 2. | Town of Southwest City | McDonald | 79.7 |
| 3. | City of La Monte | Pettis | 77.3 |
| 4. | City of Breckenridge Hills | St. Louis | 73.9 |
| 5. | City of Edmundson | St. Louis | 73.5 |
| 6. | City of Milan | Sullivan | 72.6 |
| 7. | City of Carthage | Jasper | 71.9 |
| 8. | City of Grandview | Jackson | 69.5 |
| 9. | City of Woodson Terrace | St. Louis | 68.8 |
| 10. | Town of Verona | Lawrence | 68.3 |
| 11. | City of Purdy | Barry | 67.6 |
| 12. | City of Senath | Dunklin | 67.2 |
| 13. | City of Saint Robert | Pulaski | 66.8 |
| 14. | Fort Leonard Wood Census Designated Place | Pulaski | 66.2 |
| 15. | City of Kansas City | Jackson | 66.0 |
| 16. | City of Charlack | St. Louis | 65.3 |
| 17. | City of Olivette | St. Louis | 64.8 |
| 18. | City of Butterfield | Barry | 63.0 |
| 19. | City of University City | St. Louis | 62.0 |
| 20. | City of Saint John | St. Louis | 61.5 |
