RANKING · 2020 CENSUS · 56 SHOWN OF 56

Most segregated, California counties · 2020

California counties ranked by the CensusEasy Segregation Score, the White vs non-White index of dissimilarity across census tracts (2020 ACS). Higher means residents are more sorted into separate neighborhoods. This list covers the 56 counties in California that qualify, ranked against each other statewide. The median across all 56 is 31.

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

RANKPLACESTATEPOPSEGREGATION SCOREVS –

01Los Angeles County, CACA9,694,93455–

02Monterey County, CACA433,72954–

03Kern County, CACA927,06849–

04Santa Cruz County, CACA258,85247–

05Madera County, CACA167,92747–

06Ventura County, CACA830,85146–

07Santa Barbara County, CACA442,06543–

08Orange County, CACA3,149,50743–

09Lassen County, CACA28,11741–

10San Diego County, CACA3,282,24841–

11Contra Costa County, CACA1,170,07041–

12San Mateo County, CACA743,56840–

13Fresno County, CACA1,035,45640–

14Alameda County, CACA1,636,63039–

15San Bernardino County, CACA2,224,09139–

16Imperial County, CACA181,41139–

17Santa Clara County, CACA1,914,39138–

18Sacramento County, CACA1,618,46038–

19Tulare County, CACA485,14638–

20Riverside County, CACA2,544,91636–

21Kings County, CACA154,32735–

22San Joaquin County, CACA823,81535–

23San Francisco County, CACA826,07935–

24San Benito County, CACA70,08234–

25Solano County, CACA455,37633–

26Marin County, CACA253,69433–

27Napa County, CACA132,94931–

28Stanislaus County, CACA557,71931–

29Merced County, CACA297,26030–

30Sonoma County, CACA486,44429–

31Tehama County, CACA64,66527–

32Glenn County, CACA28,14127–

33Amador County, CACA41,87626–

34Tuolumne County, CACA53,16026–

35San Luis Obispo County, CACA282,36725–

36Butte County, CACA209,21125–

37Humboldt County, CACA131,64724–

38El Dorado County, CACA192,32324–

39Placer County, CACA442,08123–

40Nevada County, CACA101,91123–

41Yuba County, CACA88,69122–

42Siskiyou County, CACA42,01322–

43Lake County, CACA67,77222–

44Yolo County, CACA224,41022–

45Colusa County, CACA21,83621–

46Sutter County, CACA98,78721–

47Mendocino County, CACA88,12220–

48Plumas County, CACA18,58320–

49Shasta County, CACA181,64819–

50Del Norte County, CACA26,41018–

51Inyo County, CACA18,15817–

52Calaveras County, CACA46,60515–

53Mariposa County, CACA16,91813–

54Mono County, CACA12,50511–

55Modoc County, CACA8,42611–

56Trinity County, CACA15,7206–

SHOWING 1–56 OF 56

Download CSV (full list, 56 rows)How this score is calculated

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS