RANKING · 1990 CENSUS · 58 SHOWN OF 58

Largest senior population, California counties · 1990

California counties home to the most residents aged 65 and over as of 1990. Ranked by number of people, not the senior share. This list covers the 58 counties in California that qualify, ranked against each other statewide.

CaliforniaAll states All rankings

SAME RANKING BYCities States Metros

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPRESIDENTS 65 AND OVERVS –

01Los Angeles County, CACA9,694,934855,666–

02San Diego County, CACA3,282,248272,348–

03Orange County, CACA3,149,507218,991–

04Riverside County, CACA2,544,916153,890–

05Alameda County, CACA1,636,630135,285–

06Santa Clara County, CACA1,914,391128,846–

07San Bernardino County, CACA2,224,091123,838–

08Sacramento County, CACA1,618,460109,674–

09San Francisco County, CACA826,079105,263–

10Contra Costa County, CACA1,170,07087,459–

11San Mateo County, CACA743,56880,308–

12Fresno County, CACA1,035,45668,311–

13Ventura County, CACA830,85162,469–

14San Joaquin County, CACA823,81553,281–

15Kern County, CACA927,06852,642–

16Sonoma County, CACA486,44452,348–

17Santa Barbara County, CACA442,06545,093–

18Stanislaus County, CACA557,71940,253–

19Monterey County, CACA433,72934,514–

20Tulare County, CACA485,14633,337–

21Butte County, CACA209,21131,487–

22San Luis Obispo County, CACA282,36730,612–

23Marin County, CACA253,69428,221–

24Solano County, CACA455,37627,879–

25Santa Cruz County, CACA258,85226,090–

26Shasta County, CACA181,64820,765–

27Placer County, CACA442,08120,454–

28Napa County, CACA132,94918,291–

29Merced County, CACA297,26016,337–

30El Dorado County, CACA192,32315,353–

31Humboldt County, CACA131,64714,685–

32Nevada County, CACA101,91114,281–

33Yolo County, CACA224,41013,438–

34Lake County, CACA67,77211,519–

35Imperial County, CACA181,41111,111–

36Mendocino County, CACA88,12210,867–

37Madera County, CACA167,92710,687–

38Tehama County, CACA64,6658,383–

39Tuolumne County, CACA53,1608,002–

40Kings County, CACA154,3277,812–

41Sutter County, CACA98,7877,705–

42Siskiyou County, CACA42,0137,197–

43Yuba County, CACA88,6916,391–

44Calaveras County, CACA46,6055,659–

45Amador County, CACA41,8765,356–

46San Benito County, CACA70,0823,631–

47Inyo County, CACA18,1583,398–

48Plumas County, CACA18,5833,389–

49Glenn County, CACA28,1413,359–

50Del Norte County, CACA26,4103,003–

51Lassen County, CACA28,1172,859–

52Mariposa County, CACA16,9182,550–

53Colusa County, CACA21,8362,052–

54Trinity County, CACA15,7201,968–

55Modoc County, CACA8,4261,683–

56Sierra County, CACA3,098876–

57Mono County, CACA12,505610–

58Alpine County, CACA1,04383–

SHOWING 1–58 OF 58

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