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

Counties in Pennsylvania by share of population aged 65 and over

Sullivan County had the highest share of population aged 65 and over of 67 counties in 2021, at 29.9%. Philadelphia County had the lowest, at 14.5%. The median was 21.9% and the figure for Pennsylvania was 19.5%. Source: the U.S. Census Bureau.

Highest29.9Sullivan County
Lowest14.5Philadelphia County
Median21.967 counties
Pennsylvania19.5History

Top 40 counties, 2021

CSVChart (SVG)

Sullivan CountySullivan County: 29.9 %29.9Cameron CountyCameron County: 28.4 %28.4Potter CountyPotter County: 26.1 %26.1Wayne CountyWayne County: 25 %25Venango CountyVenango County: 24.5 %24.5Susquehanna CountySusquehanna County: 24.4 %24.4Warren CountyWarren County: 24.3 %24.3Westmoreland CountyWestmoreland County: 24.2 %24.2Somerset CountySomerset County: 24.2 %24.2Cambria CountyCambria County: 24 %24Bedford CountyBedford County: 23.8 %23.8Elk CountyElk County: 23.7 %23.7Armstrong CountyArmstrong County: 23.6 %23.6Tioga CountyTioga County: 23.3 %23.3Mercer CountyMercer County: 23.3 %23.3Lawrence CountyLawrence County: 23.2 %23.2Montour CountyMontour County: 23.1 %23.1Fayette CountyFayette County: 23 %23Pike CountyPike County: 22.8 %22.8Forest CountyForest County: 22.8 %22.8Beaver CountyBeaver County: 22.8 %22.8Clearfield CountyClearfield County: 22.8 %22.8Jefferson CountyJefferson County: 22.7 %22.7Blair CountyBlair County: 22.6 %22.6Crawford CountyCrawford County: 22.5 %22.5Wyoming CountyWyoming County: 22.4 %22.4Fulton CountyFulton County: 22.3 %22.3Carbon CountyCarbon County: 22.3 %22.3Huntingdon CountyHuntingdon County: 22.2 %22.2Washington CountyWashington County: 22.1 %22.1Mifflin CountyMifflin County: 22.1 %22.1Schuylkill CountySchuylkill County: 22 %22Northumberland CountyNorthumberland County: 22 %22Adams CountyAdams County: 21.9 %21.9Bradford CountyBradford County: 21.9 %21.9Clarion CountyClarion County: 21.7 %21.7Juniata CountyJuniata County: 21.3 %21.3Indiana CountyIndiana County: 21.3 %21.3McKean CountyMcKean County: 21.2 %21.2Greene CountyGreene County: 21.1 %21.1
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2021 (%)Change on 2020
1Sullivan County29.9-0.1 pts
2Cameron County28.4+0.8 pts
3Potter County26.1+0.7 pts
4Wayne County25+0.4 pts
5Venango County24.5+0.6 pts
6Susquehanna County24.4+0.6 pts
7Warren County24.3+0.5 pts
8Westmoreland County24.2+0.5 pts
9Somerset County24.2+0.5 pts
10Cambria County24+0.4 pts
11Bedford County23.8+0.3 pts
12Elk County23.7+0.6 pts
13Armstrong County23.6+0.6 pts
14Tioga County23.3+0.4 pts
15Mercer County23.3+0.4 pts
16Lawrence County23.2+0.4 pts
17Montour County23.1+0.5 pts
18Fayette County23+0.5 pts
19Pike County22.8+0.1 pts
20Forest County22.8+0.7 pts
21Beaver County22.8+0.5 pts
22Clearfield County22.8+0.9 pts
23Jefferson County22.7+0.5 pts
24Blair County22.6+0.3 pts
25Crawford County22.5+0.4 pts
26Wyoming County22.4+0.4 pts
27Fulton County22.3+0.4 pts
28Carbon County22.3+0.2 pts
29Huntingdon County22.2+0.4 pts
30Washington County22.1+0.4 pts
31Mifflin County22.1+0.1 pts
32Schuylkill County22+0.2 pts
33Northumberland County22+0.3 pts
34Adams County21.9+0.2 pts
35Bradford County21.9+0.3 pts
36Clarion County21.7-0.1 pts
37Juniata County21.3+0.4 pts
38Indiana County21.3+0.4 pts
39McKean County21.2+0.4 pts
40Greene County21.1+0.8 pts
41Lebanon County21.1+0.3 pts
42Lackawanna County21+0.3 pts
43Lycoming County20.9+0.4 pts
44Franklin County20.9+0.2 pts
45Columbia County20.7+0.3 pts
46Perry County20.7+0.5 pts
47Clinton County20.70 pts
48Luzerne County20.6+0.2 pts
49Bucks County20.5+0.6 pts
50Butler County20.4+0.3 pts
51Northampton County20.2+0.2 pts
52Snyder County20+0.5 pts
53Allegheny County19.9+0.4 pts
54Lancaster County19.7+0.4 pts
55Erie County19.6+0.5 pts
56Cumberland County19.50 pts
57Union County19.3+0.3 pts
58Montgomery County19.1+0.4 pts
59York County18.8+0.3 pts
60Monroe County18.6+0.6 pts
61Berks County18.5+0.4 pts
62Lehigh County18.1+0.3 pts
63Dauphin County18+0.3 pts
64Chester County17.7+0.4 pts
65Delaware County17.7+0.4 pts
66Centre County15.6+0.4 pts
67Philadelphia County14.5+0.4 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

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Rank Counties in Pennsylvania 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":"Pennsylvania","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_65_plus_share&level=province&within=Pennsylvania&limit=10

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Questions

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

Sullivan County, with 29.9% in 2021, according to the U.S. Census Bureau.

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

Philadelphia County, with 14.5% in 2021.

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 Pennsylvania: more rankings