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

Counties in Maine by share of population aged 65 and over, 2025

Lincoln County had the highest share of population aged 65 and over of 16 counties in 2025, at 32.7%. Androscoggin County had the lowest, at 20%. The median was 26.9% and the figure for Maine was 24.6%. Source: the U.S. Census Bureau.

Highest32.7Lincoln County
Lowest20Androscoggin County
Median26.916 counties
Maine24.6History

All counties, 2025

CSVChart (SVG)

Lincoln CountyLincoln County: 32.7 %32.7Knox CountyKnox County: 30.5 %30.5Piscataquis CountyPiscataquis County: 29.9 %29.9Hancock CountyHancock County: 29.7 %29.7Washington CountyWashington County: 28.5 %28.5Waldo CountyWaldo County: 27.9 %27.9Aroostook CountyAroostook County: 27.5 %27.5Sagadahoc CountySagadahoc County: 27.5 %27.5Franklin CountyFranklin County: 26.3 %26.3Oxford CountyOxford County: 25.9 %25.9York CountyYork County: 25.1 %25.1Somerset CountySomerset County: 24.7 %24.7Kennebec CountyKennebec County: 23.3 %23.3Cumberland CountyCumberland County: 22.5 %22.5Penobscot CountyPenobscot County: 22 %22Androscoggin CountyAndroscoggin County: 20 %20
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2025 (%)Change on 2024
1Lincoln County32.7+0.8 pts
2Knox County30.5+0.5 pts
3Piscataquis County29.9+0.8 pts
4Hancock County29.7+0.7 pts
5Washington County28.5+0.3 pts
6Waldo County27.9+0.7 pts
7Aroostook County27.5+0.6 pts
8Sagadahoc County27.5+0.7 pts
9Franklin County26.3+0.7 pts
10Oxford County25.9+0.7 pts
11York County25.1+0.7 pts
12Somerset County24.7+0.5 pts
13Kennebec County23.3+0.5 pts
14Cumberland County22.5+0.5 pts
15Penobscot County22+0.5 pts
16Androscoggin County20+0.2 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 Maine 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":"Maine","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_65_plus_share&level=province&within=Maine&limit=10

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Questions

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

Lincoln County, with 32.7% in 2025, according to the U.S. Census Bureau.

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

Androscoggin County, with 20% in 2025.

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 Maine: more rankings