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. | Storey County | 32.6 |
| 2. | Lincoln County | 35.0 |
| 3. | Eureka County | 41.3 |
| 4. | Douglas County | 41.9 |
| 5. | Nye County | 51.3 |
| 6. | White Pine County | 51.6 |
| 7. | Lyon County | 53.8 |
| 8. | Churchill County | 54.2 |
| 9. | Esmeralda County | 57.1 |
| 10. | Lander County | 58.4 |
| 11. | Pershing County | 61.2 |
| 12. | Carson City | 62.7 |
| 13. | Elko County | 62.9 |
| 14. | Mineral County | 63.0 |
| 15. | Washoe County | 66.2 |
| 16. | Humboldt County | 66.7 |
| 17. | Clark County | 81.8 |
