RANKING · 1990 CENSUS · 58 SHOWN OF 58

Largest by population, California counties · 1990

The most populous California counties as of the 1990 population estimates. This list covers the 58 counties in California that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDFastest growing Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR1990 2000 2010 2020 2025

RANKPLACESTATETOTAL POPULATIONVS –

01Los Angeles County, CACA8,863,164–

02San Diego County, CACA2,498,016–

03Orange County, CACA2,410,556–

04Santa Clara County, CACA1,497,577–

05San Bernardino County, CACA1,418,380–

06Alameda County, CACA1,279,182–

07Riverside County, CACA1,170,413–

08Sacramento County, CACA1,041,219–

09Contra Costa County, CACA803,732–

10San Francisco County, CACA723,959–

11Ventura County, CACA669,016–

12Fresno County, CACA667,490–

13San Mateo County, CACA649,623–

14Kern County, CACA543,477–

15San Joaquin County, CACA480,628–

16Sonoma County, CACA388,222–

17Stanislaus County, CACA370,522–

18Santa Barbara County, CACA369,608–

19Monterey County, CACA355,660–

20Solano County, CACA340,421–

21Tulare County, CACA311,921–

22Marin County, CACA230,096–

23Santa Cruz County, CACA229,734–

24San Luis Obispo County, CACA217,162–

25Butte County, CACA182,120–

26Merced County, CACA178,403–

27Placer County, CACA172,796–

28Shasta County, CACA147,036–

29Yolo County, CACA141,092–

30El Dorado County, CACA125,995–

31Humboldt County, CACA119,118–

32Napa County, CACA110,765–

33Imperial County, CACA109,303–

34Kings County, CACA101,469–

35Madera County, CACA88,090–

36Mendocino County, CACA80,345–

37Nevada County, CACA78,510–

38Sutter County, CACA64,415–

39Yuba County, CACA58,228–

40Lake County, CACA50,631–

41Tehama County, CACA49,625–

42Tuolumne County, CACA48,456–

43Siskiyou County, CACA43,531–

44San Benito County, CACA36,697–

45Calaveras County, CACA31,998–

46Amador County, CACA30,039–

47Lassen County, CACA27,598–

48Glenn County, CACA24,798–

49Del Norte County, CACA23,460–

50Plumas County, CACA19,739–

51Inyo County, CACA18,281–

52Colusa County, CACA16,275–

53Mariposa County, CACA14,302–

54Trinity County, CACA13,063–

55Mono County, CACA9,956–

56Modoc County, CACA9,678–

57Sierra County, CACA3,318–

58Alpine County, CACA1,113–

SHOWING 1–58 OF 58

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS