RANKING · 2024 ACS · 58 SHOWN OF 58

Oldest housing stock, California counties

California counties ranked by oldest median year of construction (2024 ACS). 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

RELATEDMost expensive homes Cheapest homes Highest median rent Lowest median rent Highest homeownership rate Highest renter share

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS 1990

01San Francisco County, CACA826,0791946+0%

02Los Angeles County, CACA9,694,9341965+0%

03San Mateo County, CACA743,5681966+0%

04Marin County, CACA253,6941967+0%

05Alameda County, CACA1,636,6301969+0%

06Sierra County, CACA3,0981971+0%

07Humboldt County, CACA131,6471973+1%

08Santa Cruz County, CACA258,8521974+0%

09Santa Barbara County, CACA442,0651974+0%

10Inyo County, CACA18,1581975+0%

11Santa Clara County, CACA1,914,3911975+0%

12Modoc County, CACA8,4261976+1%

13Monterey County, CACA433,7291976+0%

14Napa County, CACA132,9491976+1%

15Siskiyou County, CACA42,0131976+0%

16Glenn County, CACA28,1411977+1%

17Lassen County, CACA28,1171977+0%

18Mendocino County, CACA88,1221977+0%

19Orange County, CACA3,149,5071977+0%

20Trinity County, CACA15,7201977+0%

21Colusa County, CACA21,8361978+1%

22Contra Costa County, CACA1,170,0701978+0%

23Ventura County, CACA830,8511978+0%

24Sonoma County, CACA486,4441979+0%

25Lake County, CACA67,7721980+0%

26Mono County, CACA12,5051980+0%

27San Diego County, CACA3,282,2481980+0%

28Tuolumne County, CACA53,1601980+0%

29Alpine County, CACA1,0431981+0%

30Butte County, CACA209,2111981+1%

31Del Norte County, CACA26,4101981+0%

32Plumas County, CACA18,5831981+0%

33Sacramento County, CACA1,618,4601981+1%

34Stanislaus County, CACA557,7191981+0%

35Tehama County, CACA64,6651981+1%

36Fresno County, CACA1,035,4561982+1%

37Shasta County, CACA181,6481982+0%

38Solano County, CACA455,3761982+0%

39Sutter County, CACA98,7871982+1%

40El Dorado County, CACA192,3231983+0%

41Nevada County, CACA101,9111983+0%

42San Luis Obispo County, CACA282,3671983+0%

43San Bernardino County, CACA2,224,0911983+0%

44Tulare County, CACA485,1461983+1%

45Yolo County, CACA224,4101983+1%

46Amador County, CACA41,8761984+1%

47Kern County, CACA927,0681984+1%

48San Joaquin County, CACA823,8151984+1%

49Calaveras County, CACA46,6051986+0%

50Kings County, CACA154,3271986+1%

51Mariposa County, CACA16,9181986+1%

52Merced County, CACA297,2601986+1%

53Yuba County, CACA88,6911986+1%

54Imperial County, CACA181,4111988+1%

55Madera County, CACA167,9271988+1%

56San Benito County, CACA70,0821989+1%

57Riverside County, CACA2,544,9161990+1%

58Placer County, CACA442,0811994+1%

SHOWING 1–58 OF 58

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES