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

Counties in Maine by share of population aged 65 and over

Lincoln County had the highest share of population aged 65 and over of 16 counties in 2021, at 30.1%. Androscoggin County had the lowest, at 18.9%. The median was 24.2% and the figure for Maine was 22.4%. Source: the U.S. Census Bureau.

Highest30.1Lincoln County
Lowest18.9Androscoggin County
Median24.216 counties
Maine22.4History

All counties, 2021

CSVChart (SVG)

Lincoln CountyLincoln County: 30.1 %30.1Knox CountyKnox County: 27.8 %27.8Piscataquis CountyPiscataquis County: 27.4 %27.4Hancock CountyHancock County: 27 %27Washington CountyWashington County: 26.8 %26.8Aroostook CountyAroostook County: 25.9 %25.9Waldo CountyWaldo County: 25.1 %25.1Sagadahoc CountySagadahoc County: 24.5 %24.5Franklin CountyFranklin County: 24 %24Oxford CountyOxford County: 23.4 %23.4Somerset CountySomerset County: 22.7 %22.7York CountyYork County: 22.1 %22.1Kennebec CountyKennebec County: 21.5 %21.5Cumberland CountyCumberland County: 20.4 %20.4Penobscot CountyPenobscot County: 20.2 %20.2Androscoggin CountyAndroscoggin County: 18.9 %18.9
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2021 (%)Change on 2020
1Lincoln County30.1+0.5 pts
2Knox County27.8+0.7 pts
3Piscataquis County27.4+0.2 pts
4Hancock County27+0.4 pts
5Washington County26.8+0.7 pts
6Aroostook County25.9+0.5 pts
7Waldo County25.1+0.8 pts
8Sagadahoc County24.5+0.6 pts
9Franklin County24+0.2 pts
10Oxford County23.4+0.4 pts
11Somerset County22.7+0.6 pts
12York County22.1+0.6 pts
13Kennebec County21.5+0.5 pts
14Cumberland County20.4+0.6 pts
15Penobscot County20.2+0.4 pts
16Androscoggin County18.9+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 30.1% in 2021, according to the U.S. Census Bureau.

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

Androscoggin County, with 18.9% 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 Maine: more rankings