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 Poplar Hills | Jefferson | 79.1 |
| 2. | City of Watterson Park | Jefferson | 77.9 |
| 3. | City of West Buechel | Jefferson | 72.9 |
| 4. | City of Oak Grove | Christian | 71.7 |
| 5. | City of Fincastle | Jefferson | 71.2 |
| 6. | Fort Campbell North Census Designated Place | Christian | 68.9 |
| 7. | City of Hurstbourne Acres | Jefferson | 67.0 |
| 8. | Fort Knox Census Designated Place | Hardin | 66.3 |
| 9. | City of Radcliff | Hardin | 65.8 |
| 10. | City of Worthington Hills | Jefferson | 64.2 |
| 11. | City of Coldstream | Jefferson | 64.0 |
| 12. | City of Sycamore | Jefferson | 63.1 |
| 13. | City of Shelbyville | Shelby | 61.9 |
| 14. | City of Mayfield | Graves | 61.1 |
| 15. | City of Louisville | Jefferson | 60.3 |
| 16. | City of Shively | Jefferson | 59.6 |
| 17. | City of Langdon Place | Jefferson | 59.2 |
| 18. | Breckinridge Center Census Designated Place | Union | 59.1 |
| 19. | City of Hopkinsville | Christian | 57.7 |
| 20. | City of Bowling Green | Warren | 54.4 |
