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

Counties in Massachusetts by population aged 18 to 64

Suffolk County had the highest population aged 18 to 64 of 14 counties in 2018, at 71.5%. Barnstable County had the lowest, at 54.4%. The median was 61.8% and the figure for Massachusetts was 63.5%. Source: the U.S. Census Bureau.

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Highest71.5Suffolk County
Lowest54.4Barnstable County
Median61.814 counties
Massachusetts63.5History

Map of counties, 2018

Barnstable County: 54.4 %Berkshire County: 59.3 %Bristol County: 62.4 %Dukes County: 58.3 %Essex County: 61.5 %Franklin County: 60.6 %Hampden County: 61.3 %Hampshire County: 67.3 %Middlesex County: 64.8 %Nantucket County: 65.6 %Norfolk County: 62.1 %Plymouth County: 60.3 %Suffolk County: 71.5 %Worcester County: 63.3 %
  • Under 60
  • 60 to 61
  • 61 to 62
  • 62 to 65
  • 65 and over
%, 2018. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2018

Suffolk County: 71.5 %Suffolk County71.5Hampshire County: 67.3 %Hampshire County67.3Nantucket County: 65.6 %Nantucket County65.6Middlesex County: 64.8 %Middlesex County64.8Worcester County: 63.3 %Worcester County63.3Bristol County: 62.4 %Bristol County62.4Norfolk County: 62.1 %Norfolk County62.1Essex County: 61.5 %Essex County61.5Hampden County: 61.3 %Hampden County61.3Franklin County: 60.6 %Franklin County60.6Plymouth County: 60.3 %Plymouth County60.3Berkshire County: 59.3 %Berkshire County59.3Dukes County: 58.3 %Dukes County58.3Barnstable County: 54.4 %Barnstable County54.4Suffolk County: 71.5 %Suffolk County71.5Hampshire County: 67.3 %Hampshire County67.3Nantucket County: 65.6 %Nantucket County65.6Middlesex County: 64.8 %Middlesex County64.8Worcester County: 63.3 %Worcester County63.3Bristol County: 62.4 %Bristol County62.4Norfolk County: 62.1 %Norfolk County62.1Essex County: 61.5 %Essex County61.5Hampden County: 61.3 %Hampden County61.3Franklin County: 60.6 %Franklin County60.6Plymouth County: 60.3 %Plymouth County60.3Berkshire County: 59.3 %Berkshire County59.3Dukes County: 58.3 %Dukes County58.3Barnstable County: 54.4 %Barnstable County54.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2018 (%)Change on 2017
1Suffolk County71.5-0.1 pts
2Hampshire County67.3-0.5 pts
3Nantucket County65.6-0.1 pts
4Middlesex County64.8-0.2 pts
5Worcester County63.3-0.2 pts
6Bristol County62.4-0.2 pts
7Norfolk County62.1-0.2 pts
8Essex County61.5-0.3 pts
9Hampden County61.3-0.3 pts
10Franklin County60.6-0.7 pts
11Plymouth County60.3-0.2 pts
12Berkshire County59.3-0.4 pts
13Dukes County58.3-0.5 pts
14Barnstable County54.4-0.5 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 Massachusetts by population aged 18 to 64, 2018) [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 Massachusetts by population aged 18 to 64, 2018. 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/massachusetts-counties?period=2018. 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 Massachusetts by population aged 18 to 64, 2018. 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/massachusetts-counties?period=2018.

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 Massachusetts by population aged 18 to 64, 2018 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-18-64/massachusetts-counties?period=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_massachusetts_by_2018,
  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 Massachusetts by population aged 18 to 64, 2018}},
  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/massachusetts-counties?period=2018. 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 Massachusetts by population aged 18 to 64, 2018
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/massachusetts-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/massachusetts-counties?period=2018.
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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Rank Counties in Massachusetts by population aged 18 to 64 using official data, and cite the source.
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Questions

Which county has the highest population aged 18 to 64?

Suffolk County, with 71.5% in 2018, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Barnstable County, with 54.4% in 2018.

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 Massachusetts: more rankings