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 East Chicago | Lake | 85.3 |
| 2. | City of Hammond | Lake | 79.9 |
| 3. | City of Ligonier | Noble | 78.1 |
| 4. | City of Whiting | Lake | 72.8 |
| 5. | Town of Akron | Fulton | 72.6 |
| 6. | City of Elkhart | Elkhart | 71.2 |
| 7. | Town of Merrillville | Lake | 70.7 |
| 8. | City of South Bend | St. Joseph | 69.9 |
| 9. | City of Lawrence | Marion | 66.9 |
| 10. | City of Lake Station | Lake | 66.4 |
| 11. | City of Goshen | Elkhart | 66.2 |
| 12. | City of Indianapolis | Marion | 65.2 |
| 13. | Town of Cromwell | Noble | 65.2 |
| 14. | Town of Monon | White | 63.9 |
| 15. | Town of New Chicago | Lake | 63.4 |
| 16. | City of Logansport | Cass | 63.2 |
| 17. | City of Southport | Marion | 62.6 |
| 18. | City of Frankfort | Clinton | 61.9 |
| 19. | Town of Griffith | Lake | 57.7 |
| 20. | Town of Speedway | Marion | 57.6 |
