RANKING · 1990 CENSUS · 58 SHOWN OF 58

Oldest housing stock, California counties · 1990

California counties ranked by oldest median year of construction (1990 ACS). This list covers the 58 counties in California that qualify, ranked against each other statewide. The median across all 58 is 1971.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS –

01San Francisco County, CACA826,0791939–

02Alameda County, CACA1,636,6301960–

03Colusa County, CACA21,8361960–

04Los Angeles County, CACA9,694,9341960–

05San Mateo County, CACA743,5681960–

06Humboldt County, CACA131,6471961–

07Marin County, CACA253,6941962–

08Glenn County, CACA28,1411965–

09Modoc County, CACA8,4261966–

10Napa County, CACA132,9491966–

11Santa Cruz County, CACA258,8521967–

12Santa Barbara County, CACA442,0651967–

13Siskiyou County, CACA42,0131967–

14Kings County, CACA154,3271968–

15Monterey County, CACA433,7291968–

16Santa Clara County, CACA1,914,3911968–

17Yuba County, CACA88,6911968–

18Contra Costa County, CACA1,170,0701969–

19Inyo County, CACA18,1581969–

20San Joaquin County, CACA823,8151969–

21Sierra County, CACA3,0981969–

22Sutter County, CACA98,7871969–

23Fresno County, CACA1,035,4561970–

24Imperial County, CACA181,4111970–

25Lassen County, CACA28,1171970–

26Mendocino County, CACA88,1221970–

27Yolo County, CACA224,4101970–

28Butte County, CACA209,2111971–

29Kern County, CACA927,0681971–

30Merced County, CACA297,2601971–

31Orange County, CACA3,149,5071971–

32Sacramento County, CACA1,618,4601971–

33Tehama County, CACA64,6651971–

34Tulare County, CACA485,1461971–

35Ventura County, CACA830,8511971–

36Del Norte County, CACA26,4101972–

37Sonoma County, CACA486,4441972–

38Stanislaus County, CACA557,7191972–

39Trinity County, CACA15,7201972–

40Lake County, CACA67,7721973–

41Plumas County, CACA18,5831973–

42San Benito County, CACA70,0821973–

43San Diego County, CACA3,282,2481973–

44Shasta County, CACA181,6481973–

45Amador County, CACA41,8761974–

46Madera County, CACA167,9271974–

47Mariposa County, CACA16,9181974–

48San Luis Obispo County, CACA282,3671974–

49Solano County, CACA455,3761974–

50Alpine County, CACA1,0431975–

51El Dorado County, CACA192,3231975–

52Placer County, CACA442,0811975–

53San Bernardino County, CACA2,224,0911975–

54Tuolumne County, CACA53,1601975–

55Mono County, CACA12,5051976–

56Nevada County, CACA101,9111976–

57Calaveras County, CACA46,6051977–

58Riverside County, CACA2,544,9161977–

SHOWING 1–58 OF 58

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