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 | 88.2 |
| 2. | Town of Southwest City | McDonald | 83.3 |
| 3. | City of Milan | Sullivan | 83.2 |
| 4. | City of Breckenridge Hills | St. Louis | 81.5 |
| 5. | City of La Monte | Pettis | 80.4 |
| 6. | Blue Summit Census Designated Place | Jackson | 79.1 |
| 7. | City of Woodson Terrace | St. Louis | 77.8 |
| 8. | City of Carthage | Jasper | 75.6 |
| 9. | City of Grandview | Jackson | 75.5 |
| 10. | City of Edmundson | St. Louis | 74.5 |
| 11. | City of Overland | St. Louis | 72.3 |
| 12. | City of Northmoor | Platte | 71.7 |
| 13. | City of Saint John | St. Louis | 71.5 |
| 14. | City of Monett | Barry | 71.3 |
| 15. | City of Kansas City | Jackson | 70.8 |
| 16. | City of Marshall | Saline | 69.8 |
| 17. | City of Olivette | St. Louis | 68.8 |
| 18. | City of Saint Robert | Pulaski | 68.8 |
| 19. | Fort Leonard Wood Census Designated Place | Pulaski | 68.6 |
| 20. | City of Raytown | Jackson | 67.1 |