RANKING · 2024 ACS · 39 SHOWN OF 39

Largest senior population, Washington counties

Washington counties home to the most residents aged 65 and over as of 2024. Ranked by number of people, not the senior share. This list covers the 39 counties in Washington that qualify, ranked against each other statewide.

WashingtonAll states All rankings

SAME RANKING BYCities States Metros

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPRESIDENTS 65 AND OVERVS 2000

01King County, WAWA2,344,939320,899+77%

02Pierce County, WAWA946,288137,536+92%

03Snohomish County, WAWA870,656124,763+125%

04Spokane County, WAWA558,34495,527+84%

05Clark County, WAWA532,11986,076+162%

06Thurston County, WAWA304,26156,072+137%

07Kitsap County, WAWA283,37454,611+122%

08Whatcom County, WAWA236,39243,568+125%

09Yakima County, WAWA259,18537,267+50%

10Benton County, WAWA221,72233,796+131%

11Skagit County, WAWA132,97529,691+97%

12Clallam County, WAWA78,20225,067+83%

13Island County, WAWA85,65723,259+128%

14Cowlitz County, WAWA114,88522,230+80%

15Lewis County, WAWA88,06218,211+71%

16Grays Harbor County, WAWA78,14417,980+74%

17Chelan County, WAWA81,94116,769+81%

18Mason County, WAWA71,16516,468+102%

19Grant County, WAWA105,72714,822+72%

20Jefferson County, WAWA33,97013,673+149%

21Walla Walla County, WAWA62,36112,409+52%

22Stevens County, WAWA49,66812,178+136%

23Franklin County, WAWA102,61210,257+144%

24Okanogan County, WAWA45,23010,074+81%

25Douglas County, WAWA46,4738,180+98%

26Kittitas County, WAWA48,8038,040+108%

27Pacific County, WAWA24,3577,921+67%

28San Juan County, WAWA18,5776,656+149%

29Klickitat County, WAWA24,3315,878+122%

30Asotin County, WAWA22,5455,661+69%

31Whitman County, WAWA48,5125,597+49%

32Pend Oreille County, WAWA14,4573,841+119%

33Skamania County, WAWA12,6693,024+178%

34Lincoln County, WAWA11,9823,012+56%

35Adams County, WAWA21,4882,529+48%

36Ferry County, WAWA7,5172,263+147%

37Wahkiakum County, WAWA4,8731,590+125%

38Columbia County, WAWA4,1411,177+56%

39Garfield County, WAWA2,416613+22%

SHOWING 1–39 OF 39

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