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 | 63.7 |
| 2. | San Juan County | 60.4 |
| 3. | Weber County | 56.2 |
| 4. | Utah County | 49.7 |
| 5. | Grand County | 48.7 |
| 6. | Beaver County | 47.8 |
| 7. | Wasatch County | 47.5 |
| 8. | Millard County | 45.7 |
| 9. | Tooele County | 44.9 |
| 10. | Washington County | 44.4 |
| 11. | Davis County | 43.5 |
| 12. | Cache County | 42.1 |
| 13. | Summit County | 41.9 |
| 14. | Carbon County | 41.8 |
| 15. | Sanpete County | 40.7 |
| 16. | Uintah County | 40.3 |
| 17. | Iron County | 38.4 |
| 18. | Box Elder County | 35.5 |
| 19. | Duchesne County | 32.8 |
| 20. | Piute County | 32.5 |
