RANKING · 1990 CENSUS · 39 SHOWN OF 39

Oldest housing stock, Washington counties · 1990

Washington counties ranked by oldest median year of construction (1990 ACS). This list covers the 39 counties in Washington that qualify, ranked against each other statewide. The median across all 39 is 1968.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS –

01Garfield County, WAWA2,4161941–

02Columbia County, WAWA4,1411949–

03Lincoln County, WAWA11,9821950–

04Wahkiakum County, WAWA4,8731954–

05Walla Walla County, WAWA62,3611956–

06Spokane County, WAWA558,3441960–

07Whitman County, WAWA48,5121961–

08Cowlitz County, WAWA114,8851962–

09Grays Harbor County, WAWA78,1441962–

10Yakima County, WAWA259,1851963–

11Asotin County, WAWA22,5451964–

12Chelan County, WAWA81,9411964–

13Adams County, WAWA21,4881965–

14Kittitas County, WAWA48,8031965–

15Lewis County, WAWA88,0621965–

16King County, WAWA2,344,9391966–

17Klickitat County, WAWA24,3311966–

18Franklin County, WAWA102,6121967–

19Grant County, WAWA105,7271967–

20Pacific County, WAWA24,3571968–

21Skagit County, WAWA132,9751968–

22Douglas County, WAWA46,4731969–

23Pierce County, WAWA946,2881969–

24Whatcom County, WAWA236,3921970–

25Okanogan County, WAWA45,2301970–

26Benton County, WAWA221,7221971–

27Pend Oreille County, WAWA14,4571971–

28Clallam County, WAWA78,2021972–

29Kitsap County, WAWA283,3741972–

30Skamania County, WAWA12,6691972–

31Stevens County, WAWA49,6681972–

32Clark County, WAWA532,1191973–

33Ferry County, WAWA7,5171973–

34Island County, WAWA85,6571973–

35Jefferson County, WAWA33,9701973–

36Mason County, WAWA71,1651974–

37Snohomish County, WAWA870,6561974–

38Thurston County, WAWA304,2611974–

39San Juan County, WAWA18,5771975–

SHOWING 1–39 OF 39

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