RANKING · 2020 CENSUS · 58 SHOWN OF 58

Newest housing stock, California counties · 2020

California counties ranked by median year housing was built (2020 ACS). This list covers the 58 counties in California that qualify, ranked against each other statewide. The median across all 58 is 1980.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS 1990

01Placer County, CACA442,0811992+1%

02Imperial County, CACA181,4111989+1%

03Riverside County, CACA2,544,9161989+1%

04Calaveras County, CACA46,6051987+1%

05Madera County, CACA167,9271987+1%

06San Benito County, CACA70,0821985+1%

07Kings County, CACA154,3271984+1%

08Mariposa County, CACA16,9181984+1%

09El Dorado County, CACA192,32319830%

10Kern County, CACA927,0681983+1%

11Nevada County, CACA101,91119830%

12Amador County, CACA41,87619820%

13San Joaquin County, CACA823,8151982+1%

14San Luis Obispo County, CACA282,36719820%

15San Bernardino County, CACA2,224,09119820%

16Yolo County, CACA224,4101982+1%

17Yuba County, CACA88,6911982+1%

18Alpine County, CACA1,04319810%

19Merced County, CACA297,2601981+1%

20Shasta County, CACA181,64819810%

21Solano County, CACA455,37619810%

22Tulare County, CACA485,1461981+1%

23Del Norte County, CACA26,41019800%

24Lake County, CACA67,77219800%

25Mono County, CACA12,50519800%

26Plumas County, CACA18,58319800%

27Stanislaus County, CACA557,71919800%

28Sutter County, CACA98,7871980+1%

29Tehama County, CACA64,66519800%

30Butte County, CACA209,21119790%

31Fresno County, CACA1,035,45619790%

32Sacramento County, CACA1,618,46019790%

33San Diego County, CACA3,282,24819790%

34Tuolumne County, CACA53,16019790%

35Lassen County, CACA28,11719780%

36Sonoma County, CACA486,44419780%

37Trinity County, CACA15,72019780%

38Contra Costa County, CACA1,170,07019770%

39Colusa County, CACA21,8361976+1%

40Glenn County, CACA28,1411976+1%

41Mendocino County, CACA88,12219760%

42Orange County, CACA3,149,50719760%

43Siskiyou County, CACA42,01319760%

44Ventura County, CACA830,85119760%

45Napa County, CACA132,94919750%

46Modoc County, CACA8,42619740%

47Monterey County, CACA433,72919740%

48Santa Clara County, CACA1,914,39119740%

49Sierra County, CACA3,09819740%

50Santa Cruz County, CACA258,85219730%

51Santa Barbara County, CACA442,06519730%

52Humboldt County, CACA131,6471972+1%

53Inyo County, CACA18,15819720%

54Alameda County, CACA1,636,63019680%

55Marin County, CACA253,69419660%

56San Mateo County, CACA743,56819650%

57Los Angeles County, CACA9,694,93419630%

58San Francisco County, CACA826,07919440%

SHOWING 1–58 OF 58

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