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 2020, at 29.6%. Androscoggin County had the lowest, at 18.7%. The median was 23.9% and the figure for Maine was 21.9%. Source: the U.S. Census Bureau.

Highest29.6Lincoln County
Lowest18.7Androscoggin County
Median23.916 counties
Maine21.9History

All counties, 2020

CSVChart (SVG)

Lincoln CountyLincoln County: 29.6 %29.6Piscataquis CountyPiscataquis County: 27.3 %27.3Knox CountyKnox County: 27.1 %27.1Hancock CountyHancock County: 26.6 %26.6Washington CountyWashington County: 26.1 %26.1Aroostook CountyAroostook County: 25.4 %25.4Waldo CountyWaldo County: 24.4 %24.4Sagadahoc CountySagadahoc County: 23.9 %23.9Franklin CountyFranklin County: 23.8 %23.8Oxford CountyOxford County: 23 %23Somerset CountySomerset County: 22.2 %22.2York CountyYork County: 21.6 %21.6Kennebec CountyKennebec County: 21.1 %21.1Penobscot CountyPenobscot County: 19.8 %19.8Cumberland CountyCumberland County: 19.8 %19.8Androscoggin CountyAndroscoggin County: 18.7 %18.7
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2020 (%)
1Lincoln County29.6
2Piscataquis County27.3
3Knox County27.1
4Hancock County26.6
5Washington County26.1
6Aroostook County25.4
7Waldo County24.4
8Sagadahoc County23.9
9Franklin County23.8
10Oxford County23
11Somerset County22.2
12York County21.6
13Kennebec County21.1
14Penobscot County19.8
15Cumberland County19.8
16Androscoggin County18.7

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.

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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 29.6% in 2020, according to the U.S. Census Bureau.

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

Androscoggin County, with 18.7% in 2020.

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