Data / Rankings / Population aged 18 to 64 / Counties in Maine

Counties in Maine by population aged 18 to 64

Penobscot County had the highest population aged 18 to 64 of 16 counties in 2014, at 64.6%. Lincoln County had the lowest, at 57.3%. The median was 60.8% and the figure for Maine was 62.1%. Source: the U.S. Census Bureau.

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Highest64.6Penobscot County
Lowest57.3Lincoln County
Median60.816 counties
Maine62.1History

Map of counties, 2014

Androscoggin County: 62.1 %Aroostook County: 59.5 %Cumberland County: 63.9 %Franklin County: 61.5 %Hancock County: 60.7 %Kennebec County: 62.3 %Knox County: 59.2 %Lincoln County: 57.3 %Oxford County: 60.4 %Penobscot County: 64.6 %Piscataquis County: 58.4 %Sagadahoc County: 60.8 %Somerset County: 60.9 %Waldo County: 60.5 %Washington County: 59.1 %York County: 62.3 %
  • Under 59
  • 59 to 60
  • 60 to 61
  • 61 to 62
  • 62 and over
%, 2014. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2014

Penobscot County: 64.6 %Penobscot County64.6Cumberland County: 63.9 %Cumberland County63.9Kennebec County: 62.3 %Kennebec County62.3York County: 62.3 %York County62.3Androscoggin County: 62.1 %Androscoggin County62.1Franklin County: 61.5 %Franklin County61.5Somerset County: 60.9 %Somerset County60.9Sagadahoc County: 60.8 %Sagadahoc County60.8Hancock County: 60.7 %Hancock County60.7Waldo County: 60.5 %Waldo County60.5Oxford County: 60.4 %Oxford County60.4Aroostook County: 59.5 %Aroostook County59.5Knox County: 59.2 %Knox County59.2Washington County: 59.1 %Washington County59.1Piscataquis County: 58.4 %Piscataquis County58.4Lincoln County: 57.3 %Lincoln County57.3Penobscot County: 64.6 %Penobscot County64.6Cumberland County: 63.9 %Cumberland County63.9Kennebec County: 62.3 %Kennebec County62.3York County: 62.3 %York County62.3Androscoggin County: 62.1 %Androscoggin County62.1Franklin County: 61.5 %Franklin County61.5Somerset County: 60.9 %Somerset County60.9Sagadahoc County: 60.8 %Sagadahoc County60.8Hancock County: 60.7 %Hancock County60.7Waldo County: 60.5 %Waldo County60.5Oxford County: 60.4 %Oxford County60.4Aroostook County: 59.5 %Aroostook County59.5Knox County: 59.2 %Knox County59.2Washington County: 59.1 %Washington County59.1Piscataquis County: 58.4 %Piscataquis County58.4Lincoln County: 57.3 %Lincoln County57.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2014 (%)Change on 2013
1Penobscot County64.6-0.4 pts
2Cumberland County63.9-0.3 pts
3Kennebec County62.3-0.5 pts
4York County62.3-0.3 pts
5Androscoggin County62.1-0.4 pts
6Franklin County61.5-0.6 pts
7Somerset County60.9-0.4 pts
8Sagadahoc County60.8-0.5 pts
9Hancock County60.7-0.8 pts
10Waldo County60.5-0.7 pts
11Oxford County60.4-0.5 pts
12Aroostook County59.5-0.4 pts
13Knox County59.2-0.5 pts
14Washington County59.1-0.6 pts
15Piscataquis County58.4-0.7 pts
16Lincoln County57.3-0.5 pts

Other periods

About this ranking

Residents aged 18 to 64 as a percentage of total population on 1 July. United States: Census Bureau county population estimates by age; states and the nation are sums of their counties.

Not comparable with working-age shares for ages 15 to 64 used in EU and World Bank statistics.

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: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties (Counties in Maine by population aged 18 to 64, 2014) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html

MLA 9

Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in Maine by population aged 18 to 64, 2014. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/population-18-64/maine-counties?period=2014. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Counties in Maine by population aged 18 to 64, 2014. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/population-18-64/maine-counties?period=2014.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in Maine by population aged 18 to 64, 2014 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-18-64/maine-counties?period=2014 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_maine_by_2014,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in Maine by population aged 18 to 64, 2014}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/population-18-64/maine-counties?period=2014. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in Maine by population aged 18 to 64, 2014
PY  - 2026
DA  - 2026/06/25
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2  - https://invokely.ai/rankings/population-18-64/maine-counties?period=2014
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/maine-counties?period=2014.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest population aged 18 to 64?

Penobscot County, with 64.6% in 2014, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Lincoln County, with 57.3% in 2014.

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: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Retrieved 2026-10-12.

Population aged 18 to 64: other rankings

Counties in Maine: more rankings