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. | Town of Ignacio | La Plata | 83.0 |
| 2. | Town of Olathe | Montrose | 79.2 |
| 3. | Berkley Census Designated Place | Adams | 78.8 |
| 4. | Cattle Creek Census Designated Place | Garfield | 78.5 |
| 5. | Town of Platteville | Weld | 78.4 |
| 6. | Derby Census Designated Place | Adams | 78.2 |
| 7. | City of Aurora | Adams | 77.9 |
| 8. | Sherrelwood Census Designated Place | Adams | 77.8 |
| 9. | Welby Census Designated Place | Adams | 77.1 |
| 10. | Dotsero Census Designated Place | Eagle | 77.1 |
| 11. | City of Commerce City | Adams | 76.9 |
| 12. | City of Monte Vista | Rio Grande | 76.8 |
| 13. | City of Fort Morgan | Morgan | 76.8 |
| 14. | Town of Blanca | Costilla | 76.4 |
| 15. | City of Fort Lupton | Weld | 76.2 |
| 16. | Shaw Heights Census Designated Place | Adams | 76.2 |
| 17. | City of Federal Heights | Adams | 76.1 |
| 18. | Town of Garden City | Weld | 76.0 |
| 19. | Fort Garland Census Designated Place | Costilla | 75.9 |
| 20. | City of Alamosa | Alamosa | 75.8 |
