RANKING · 2024 ACS · 39 SHOWN OF 39

Largest households, Washington counties

Washington counties ranked by average household size (2023 ACS). This list covers the 39 counties in Washington 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

YEAR2010 2020 2024

RANKPLACESTATEPOPAVERAGE HOUSEHOLD SIZEVS 2000

01Adams County, WAWA21,4883.25–

02Franklin County, WAWA102,6123.21–

03Yakima County, WAWA259,1852.89–

04Grant County, WAWA105,7272.79–

05Douglas County, WAWA46,4732.73–

06Benton County, WAWA221,7222.70–

07Snohomish County, WAWA870,6562.64–

08Clark County, WAWA532,1192.62–

09Pierce County, WAWA946,2882.59–

10Lewis County, WAWA88,0622.56–

11Mason County, WAWA71,1652.55–

12Cowlitz County, WAWA114,8852.53–

13Chelan County, WAWA81,9412.49–

14Kitsap County, WAWA283,3742.49–

15Thurston County, WAWA304,2612.48–

16Skagit County, WAWA132,9752.47–

17Stevens County, WAWA49,6682.47–

18Skamania County, WAWA12,6692.45–

19Walla Walla County, WAWA62,3612.44–

20Spokane County, WAWA558,3442.44–

21Grays Harbor County, WAWA78,1442.42–

22Whatcom County, WAWA236,3922.40–

23King County, WAWA2,344,9392.39–

24Lincoln County, WAWA11,9822.36–

25Asotin County, WAWA22,5452.35–

26Island County, WAWA85,6572.35–

27Pend Oreille County, WAWA14,4572.34–

28Klickitat County, WAWA24,3312.32–

29Okanogan County, WAWA45,2302.32–

30Ferry County, WAWA7,5172.29–

31Kittitas County, WAWA48,8032.28–

32Garfield County, WAWA2,4162.25–

33Wahkiakum County, WAWA4,8732.20–

34Whitman County, WAWA48,5122.18–

35Clallam County, WAWA78,2022.18–

36Pacific County, WAWA24,3572.16–

37Columbia County, WAWA4,1412.12–

38San Juan County, WAWA18,5772.03–

39Jefferson County, WAWA33,9702.02–

SHOWING 1–39 OF 39

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES