Data / Rankings / Population aged 65 and over / Counties in Washington

Counties in Washington by share of population aged 65 and over

Jefferson County had the highest share of population aged 65 and over of 39 counties in 2022, at 41.7%. Franklin County had the lowest, at 10.5%. The median was 22% and the figure for Washington was 17.2%. Source: the U.S. Census Bureau.

Highest41.7Jefferson County
Lowest10.5Franklin County
Median2239 counties
Washington17.2History

All counties, 2022

CSVChart (SVG)

Jefferson CountyJefferson County: 41.7 %41.7San Juan CountySan Juan County: 35.8 %35.8Clallam CountyClallam County: 33.6 %33.6Pacific CountyPacific County: 32.9 %32.9Wahkiakum CountyWahkiakum County: 32.5 %32.5Ferry CountyFerry County: 29.7 %29.7Columbia CountyColumbia County: 29.4 %29.4Pend Oreille CountyPend Oreille County: 28.3 %28.3Island CountyIsland County: 28.2 %28.2Lincoln CountyLincoln County: 27.4 %27.4Garfield CountyGarfield County: 27.1 %27.1Stevens CountyStevens County: 26 %26Asotin CountyAsotin County: 25.6 %25.6Klickitat CountyKlickitat County: 25 %25Mason CountyMason County: 24.8 %24.8Okanogan CountyOkanogan County: 24.7 %24.7Grays Harbor CountyGrays Harbor County: 23.9 %23.9Skagit CountySkagit County: 23.5 %23.5Skamania CountySkamania County: 23.5 %23.5Lewis CountyLewis County: 22 %22Chelan CountyChelan County: 21.6 %21.6Walla Walla CountyWalla Walla County: 21.3 %21.3Cowlitz CountyCowlitz County: 20.6 %20.6Kitsap CountyKitsap County: 20.3 %20.3Whatcom CountyWhatcom County: 19.7 %19.7Thurston CountyThurston County: 19.4 %19.4Douglas CountyDouglas County: 19.1 %19.1Kittitas CountyKittitas County: 19 %19Spokane CountySpokane County: 18.1 %18.1Clark CountyClark County: 17.3 %17.3Benton CountyBenton County: 16.4 %16.4Pierce CountyPierce County: 15.6 %15.6Snohomish CountySnohomish County: 15.4 %15.4Grant CountyGrant County: 15.3 %15.3Yakima CountyYakima County: 15.2 %15.2King CountyKing County: 14.4 %14.4Whitman CountyWhitman County: 12.7 %12.7Adams CountyAdams County: 12 %12Franklin CountyFranklin County: 10.5 %10.5
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2022 (%)Change on 2021
1Jefferson County41.7+1.3 pts
2San Juan County35.8+0.9 pts
3Clallam County33.6+1.1 pts
4Pacific County32.9+0.7 pts
5Wahkiakum County32.5+0.3 pts
6Ferry County29.7-0.4 pts
7Columbia County29.4+0.5 pts
8Pend Oreille County28.3+0.2 pts
9Island County28.2+1 pts
10Lincoln County27.4+0.4 pts
11Garfield County27.10 pts
12Stevens County26+0.6 pts
13Asotin County25.6+0.7 pts
14Klickitat County25+0.6 pts
15Mason County24.8+0.4 pts
16Okanogan County24.7+0.2 pts
17Grays Harbor County23.9+0.7 pts
18Skagit County23.5+0.6 pts
19Skamania County23.5+0.7 pts
20Lewis County22+0.3 pts
21Chelan County21.6+0.5 pts
22Walla Walla County21.3+0.6 pts
23Cowlitz County20.6+0.4 pts
24Kitsap County20.3+0.6 pts
25Whatcom County19.7+0.3 pts
26Thurston County19.4+0.5 pts
27Douglas County19.1+0.6 pts
28Kittitas County190 pts
29Spokane County18.1+0.4 pts
30Clark County17.3+0.4 pts
31Benton County16.4+0.3 pts
32Pierce County15.6+0.4 pts
33Snohomish County15.4+0.4 pts
34Grant County15.3+0.3 pts
35Yakima County15.2+0.3 pts
36King County14.4+0.3 pts
37Whitman County12.7-0.9 pts
38Adams County12+0.2 pts
39Franklin County10.5+0.3 pts

Other periods

About this ranking

Residents aged 65 or over as a percentage of total population. Spain: 1 January, INE annual census. United States: 1 July, Census Bureau population estimates. World Bank figures for other countries and the World refer to mid-year.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/counties/asrh/cc-est2025-agesex-all.csv. Retrieved 2026-10-09.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Washington by share of population aged 65 and over using official data, and cite the source.
rank_places {"indicator":"population_65_plus_share","level":"province","within":"Washington","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_65_plus_share&level=province&within=Washington&limit=10

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Questions

Which county has the highest share of population aged 65 and over?

Jefferson County, with 41.7% in 2022, according to the U.S. Census Bureau.

Which county has the lowest share of population aged 65 and over?

Franklin County, with 10.5% in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. Retrieved 2026-10-09.

Population aged 65 and over: other rankings

Counties in Washington: more rankings