RANKING · 2024 ACS · 58 SHOWN OF 58

Most racially diverse, California counties

California counties ranked by the CensusEasy Diversity Score (0 to 100), the chance two random residents are of a different race or ethnicity (2024 ACS). This list covers the 58 counties in California that qualify, ranked against each other statewide. The median across all 58 is 71.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

RANKPLACESTATEPOPDIVERSITY SCOREVS 1990

01Solano County, CACA455,37694+30%

02Alameda County, CACA1,636,63094+16%

03Contra Costa County, CACA1,170,07091+51%

04Sacramento County, CACA1,618,46091+49%

05San Mateo County, CACA743,56889+25%

06San Francisco County, CACA826,07989+6%

07San Joaquin County, CACA823,81588+21%

08Santa Clara County, CACA1,914,39187+19%

09Orange County, CACA3,149,50787+34%

10Sutter County, CACA98,78786+54%

11Yolo County, CACA224,41086+43%

12San Diego County, CACA3,282,24885+31%

13Los Angeles County, CACA9,694,93484+1%

14Yuba County, CACA88,69181+50%

15Riverside County, CACA2,544,91679+24%

16Napa County, CACA132,94978+93%

17San Bernardino County, CACA2,224,09178+13%

18Ventura County, CACA830,85177+26%

19Fresno County, CACA1,035,45677+2%

20Stanislaus County, CACA557,71976+36%

21Santa Barbara County, CACA442,06575+22%

22Kern County, CACA927,06873+12%

23Alpine County, CACA1,04373+33%

24Santa Cruz County, CACA258,85272+46%

25Inyo County, CACA18,15872+78%

26Del Norte County, CACA26,41072+57%

27Kings County, CACA154,32772−2%

28Glenn County, CACA28,14171+41%

29Sonoma County, CACA486,44471+109%

30Lassen County, CACA28,11770+60%

31Monterey County, CACA433,72968−10%

32Mendocino County, CACA88,12268+100%

33Merced County, CACA297,26067−9%

34Madera County, CACA167,92767+4%

35Tehama County, CACA64,66567+122%

36Placer County, CACA442,08166+151%

37Marin County, CACA253,69466+96%

38Butte County, CACA209,21166+121%

39San Benito County, CACA70,08265−1%

40Lake County, CACA67,77265+138%

41San Luis Obispo County, CACA282,36765+62%

42Colusa County, CACA21,83664+1%

43Mono County, CACA12,50563+77%

44Tulare County, CACA485,14661−11%

45Humboldt County, CACA131,64760+120%

46Amador County, CACA41,87655+63%

47El Dorado County, CACA192,32355+142%

48Siskiyou County, CACA42,01354+95%

49Mariposa County, CACA16,91853+116%

50Modoc County, CACA8,42651+90%

51Shasta County, CACA181,64851+149%

52Calaveras County, CACA46,60549+153%

53Trinity County, CACA15,72047+113%

54Tuolumne County, CACA53,16046+52%

55Nevada County, CACA101,91142+170%

56Plumas County, CACA18,58341+99%

57Imperial County, CACA181,41132−48%

58Sierra County, CACA3,09831+74%

SHOWING 1–58 OF 58

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES