California Census Data Comparison Tool

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Ranking Counties by Diversity Index (last updated July 1, 2021)

There are 20 records sorted in ascending order.

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. Nevada County 34.0
2. Plumas County 37.4
3. Trinity County 37.5
4. Sierra County 37.9
5. Shasta County 43.3
6. Calaveras County 43.6
7. Mariposa County 43.8
8. Tuolumne County 43.9
9. El Dorado County 46.2
10. Amador County 46.3
11. Siskiyou County 49.7
12. Modoc County 50.1
13. Humboldt County 51.5
14. Placer County 53.2
15. Marin County 55.7
16. Butte County 56.7
17. San Luis Obispo County 58.2
18. Alpine County 60.3
19. Mono County 62.1
20. Lake County 62.6

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California Census Data Comparison Tool

Compare California July 1, 2021 Data
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