RANKING · 2020 CENSUS · 39 SHOWN OF 39

Oldest housing stock, Washington counties · 2020

Washington counties ranked by oldest median year of construction (2020 ACS). This list covers the 39 counties in Washington that qualify, ranked against each other statewide. The median across all 39 is 1980.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS 1990

01Garfield County, WAWA2,4161952+1%

02Columbia County, WAWA4,1411961+1%

03Lincoln County, WAWA11,9821972+1%

04Walla Walla County, WAWA62,3611973+1%

05Yakima County, WAWA259,1851974+1%

06Adams County, WAWA21,48819740%

07Cowlitz County, WAWA114,8851974+1%

08Grays Harbor County, WAWA78,1441974+1%

09Asotin County, WAWA22,5451976+1%

10Whitman County, WAWA48,5121977+1%

11Lewis County, WAWA88,0621977+1%

12Pacific County, WAWA24,35719770%

13Spokane County, WAWA558,3441977+1%

14Klickitat County, WAWA24,3311978+1%

15Pend Oreille County, WAWA14,45719790%

16Wahkiakum County, WAWA4,8731980+1%

17Chelan County, WAWA81,9411980+1%

18Clallam County, WAWA78,20219800%

19King County, WAWA2,344,9391980+1%

20Skamania County, WAWA12,66919800%

21Douglas County, WAWA46,4731981+1%

22Okanogan County, WAWA45,2301981+1%

23Benton County, WAWA221,7221982+1%

24Skagit County, WAWA132,9751983+1%

25Stevens County, WAWA49,6681983+1%

26Ferry County, WAWA7,5171984+1%

27Pierce County, WAWA946,2881984+1%

28Grant County, WAWA105,7271985+1%

29Kitsap County, WAWA283,3741985+1%

30Whatcom County, WAWA236,3921986+1%

31Jefferson County, WAWA33,9701986+1%

32Island County, WAWA85,6571987+1%

33Kittitas County, WAWA48,8031987+1%

34Mason County, WAWA71,1651987+1%

35Snohomish County, WAWA870,6561988+1%

36San Juan County, WAWA18,5771989+1%

37Thurston County, WAWA304,2611989+1%

38Clark County, WAWA532,1191991+1%

39Franklin County, WAWA102,6121992+1%

SHOWING 1–39 OF 39

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