California 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. | San Joaquin County | 88.6 |
| 2. | Los Angeles County | 88.4 |
| 3. | San Bernardino County | 87.5 |
| 4. | Fresno County | 87.2 |
| 5. | Solano County | 86.7 |
| 6. | Riverside County | 86.6 |
| 7. | Kern County | 85.6 |
| 8. | Merced County | 85.4 |
| 9. | Kings County | 85.2 |
| 10. | Stanislaus County | 85.0 |
| 11. | Monterey County | 84.9 |
| 12. | Orange County | 84.8 |
| 13. | Contra Costa County | 84.8 |
| 14. | Alameda County | 84.5 |
| 15. | Madera County | 84.3 |
| 16. | Sutter County | 84.0 |
| 17. | San Benito County | 83.9 |
| 18. | Ventura County | 83.7 |
| 19. | San Diego County | 83.7 |
| 20. | Santa Barbara County | 83.6 |
