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

Counties in Massachusetts by share of population aged 65 and over

Barnstable County had the highest share of population aged 65 and over of 14 counties in 2023, at 34.6%. Suffolk County had the lowest, at 13.6%. The median was 19.6% and the figure for Massachusetts was 18.9%. Source: the U.S. Census Bureau.

Highest34.6Barnstable County
Lowest13.6Suffolk County
Median19.614 counties
Massachusetts18.9History

All counties, 2023

CSVChart (SVG)

Barnstable CountyBarnstable County: 34.6 %34.6Dukes CountyDukes County: 29.5 %29.5Berkshire CountyBerkshire County: 26.3 %26.3Franklin CountyFranklin County: 26.1 %26.1Plymouth CountyPlymouth County: 21.1 %21.1Hampshire CountyHampshire County: 20.7 %20.7Essex CountyEssex County: 19.7 %19.7Hampden CountyHampden County: 19.6 %19.6Bristol CountyBristol County: 19.1 %19.1Norfolk CountyNorfolk County: 19 %19Worcester CountyWorcester County: 18 %18Nantucket CountyNantucket County: 17.7 %17.7Middlesex CountyMiddlesex County: 17.3 %17.3Suffolk CountySuffolk County: 13.6 %13.6
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2023 (%)Change on 2022
1Barnstable County34.6+0.8 pts
2Dukes County29.5+0.8 pts
3Berkshire County26.3+0.7 pts
4Franklin County26.1+0.9 pts
5Plymouth County21.1+0.6 pts
6Hampshire County20.7+0.6 pts
7Essex County19.7+0.5 pts
8Hampden County19.6+0.5 pts
9Bristol County19.1+0.5 pts
10Norfolk County19+0.4 pts
11Worcester County18+0.5 pts
12Nantucket County17.7+0.5 pts
13Middlesex County17.3+0.4 pts
14Suffolk County13.6+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

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

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Questions

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

Barnstable County, with 34.6% in 2023, according to the U.S. Census Bureau.

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

Suffolk County, with 13.6% in 2023.

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 Massachusetts: more rankings