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. | Purple Sage Census Designated Place | Sweetwater | 66.5 |
| 2. | Reliance Census Designated Place | Sweetwater | 64.3 |
| 3. | Town of Jackson | Teton | 60.7 |
| 4. | City of Rawlins | Carbon | 59.1 |
| 5. | South Greeley Census Designated Place | Laramie | 58.9 |
| 6. | Crowheart Census Designated Place | Fremont | 58.7 |
| 7. | Fox Farm-College Census Designated Place | Laramie | 56.5 |
| 8. | Warren Air Force Base Census Designated Place | Laramie | 55.6 |
| 9. | Clearview Acres Census Designated Place | Sweetwater | 53.1 |
| 10. | Johnstown Census Designated Place | Fremont | 53.1 |
| 11. | Town of Wamsutter | Sweetwater | 52.6 |
| 12. | Boulder Flats Census Designated Place | Fremont | 49.1 |
| 13. | City of Rock Springs | Sweetwater | 48.8 |
| 14. | City of Cheyenne | Laramie | 47.2 |
| 15. | City of Riverton | Fremont | 46.6 |
| 16. | Town of Baggs | Carbon | 46.4 |
| 17. | Town of Granger | Sweetwater | 45.9 |
| 18. | Arapahoe Census Designated Place | Fremont | 45.7 |
| 19. | James Town Census Designated Place | Sweetwater | 45.6 |
| 20. | Town of Evansville | Natrona | 44.2 |
