Utah Gazetteer
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.
| County | Diversity Index | |
|---|---|---|
| 1. | Salt Lake County | 65.8 |
| 2. | San Juan County | 60.9 |
| 3. | Weber County | 58.2 |
| 4. | Utah County | 51.2 |
| 5. | Grand County | 50.2 |
| 6. | Beaver County | 49.8 |
| 7. | Tooele County | 49.5 |
| 8. | Wasatch County | 47.4 |
| 9. | Millard County | 47.4 |
| 10. | Davis County | 46.3 |
| 11. | Washington County | 45.4 |
| 12. | Cache County | 44.2 |
| 13. | Summit County | 42.6 |
| 14. | Uintah County | 42.1 |
| 15. | Carbon County | 42.0 |
| 16. | Iron County | 41.9 |
| 17. | Sanpete County | 41.9 |
| 18. | Box Elder County | 37.4 |
| 19. | Duchesne County | 34.7 |
| 20. | Garfield County | 32.6 |
