Acton, MA Demographics

Population 22,980 · Census ACS 2020–24

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Median age by neighborhoodHistory and comparison ↓︎
Acton, MA map of median age by neighborhood
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Population and households in Acton

Household size in Acton

Household size, people per household
PeriodActonBoston areaMassachusettsU.S.
2006–102.752.542.532.68
2010–142.682.592.572.73
2015–192.692.602.572.71
2020–242.582.552.522.65
Change−0.17+0.01−0.01−0.03
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Households in Acton average 2.58 people, about the same as the country as a whole (2.65). Household size has dropped from 2.75 in 2006–10, a much bigger shift than nationally. Households are largest in the east and smallest in the north.

Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).

Median age in Acton

Median age, years
PeriodActonBoston areaMassachusettsU.S.
2006–1040.538.939.437.7
2010–1442.339.740.138.6
2015–1944.140.441.039.6
2020–2444.640.841.440.1
Change+4.2+1.9+2.0+2.3
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With a median age of 44.6, Acton is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees. The median age has climbed from 40.5 in 2006–10, in line with the national trend. The youngest areas are in the east, the oldest in the north.

Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).

Single-parent households in Acton

Single-parent households, % of households
PeriodActonBoston areaMassachusettsU.S.
2006–106.9%10.4%11.0%12.3%
2010–145.2%10.2%11.0%12.3%
2015–193.8%9.6%10.3%11.6%
2020–245.2%9.7%10.6%11.6%
Change−1.7 pts−0.7 pts−0.4 pts−0.6 pts
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Single parents head only 5.2% of households in Acton, well below the national share of 11.6%. Since 2006–10, the single-parent share has fallen 1.7 points, in line with the national trend. Acton has a lower share of single-parent households than the great majority of Massachusetts cities.

Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).

Housing in Acton

Renters in Acton

Renters, % of occupied homes
PeriodActonBoston areaMassachusettsU.S.
2006–1020.1%36.8%36.0%33.3%
2010–1424.2%38.5%37.7%35.6%
2015–1924.8%38.3%37.6%36.0%
2020–2424.8%38.4%37.5%34.8%
Change+4.7 pts+1.6 pts+1.5 pts+1.5 pts
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Acton is largely a place of homeowners: only 24.8% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. About a third of owners (32.4%) have paid off their mortgages, below the national share of 39.8%. Since 2006–10, the renter share has risen 4.7 points, a much bigger shift than nationally.

Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).

Vacant homes in Acton

Vacant homes, % of all homes
PeriodActonBoston areaMassachusettsU.S.
2006–107.6%8.1%9.5%11.4%
2010–145.0%7.4%9.1%11.4%
2015–192.6%7.3%8.9%11.1%
2020–242.9%6.7%7.9%9.6%
Change−4.8 pts−1.4 pts−1.6 pts−1.8 pts
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Empty homes are scarce in Acton: just 2.9% sit vacant, compared with 9.6% nationally, a sign of a tight housing market. Vacancy is down 4.8 points from 2006–10, mirroring the country. Only 24 of the 275 Massachusetts cities with 5,000+ people have a lower vacancy rate.

Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).

Age of homes in Acton

Age of homes, median year built
PeriodActonBoston areaMassachusettsU.S.
2006–101969195819581974
2010–141971195919591975
2015–191973196119611977
2020–241975196419631980
Change+6+6+5+6
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Homes in Acton run a bit older than the national norm, with a median build year of 1975 against 1980. Locally, though, homes here are newer than in the Boston area as a whole, where the median home dates to 1964. The median year built has moved up from 1969 in 2006–10, a sign of steady new building. Newer construction is concentrated in the northeast, while the northwest has the oldest housing.

Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).

Rent in Acton

Rent, per month
PeriodActonBoston areaMassachusettsU.S.
2006–10$1,058$1,171$1,085$965
2010–14$1,145$1,251$1,157$1,040
2015–19$1,541$1,537$1,398$1,213
2020–24$1,810$2,051$1,860$1,571
Change+$753+$881+$775+$606
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A typical rental in Acton costs $1,810 a month with utilities, above the national median of $1,571. Even so, rents here are lower than in the wider Boston area ($2,051). Rent has climbed $753 a month since 2006–10, up 71%, faster than rents rose nationally. Rent takes 32.2% of the typical renter's income, just over the 30% mark often used to define affordable rent.

Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).

Education in Acton

Bachelor's degrees in Acton

Bachelor's degrees, % of adults 25+
PeriodActonBoston areaMassachusettsU.S.
2006–1073.9%42.2%38.5%28.4%
2010–1474.8%44.1%40.1%29.6%
2015–1975.2%48.2%43.6%32.1%
2020–2479.6%51.9%47.2%35.6%
Change+5.7 pts+9.7 pts+8.7 pts+7.2 pts
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Acton is highly educated: about eight in ten adults 25 and older (79.6%) hold at least a bachelor's degree, far above the national share of 35.6%. The share with a degree is up 5.7 points from 2006–10, in line with the national trend. Only 21 of the 275 Massachusetts cities with 5,000+ people have a higher share of college graduates.

Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).

High school graduates in Acton

High school graduates, % of adults 25+
PeriodActonBoston areaMassachusettsU.S.
2006–1096.8%89.8%88.4%84.9%
2010–1497.2%90.6%89.3%86.1%
2015–1996.5%91.5%90.5%87.7%
2020–2498.0%91.8%91.0%89.3%
Change+1.2 pts+2.1 pts+2.6 pts+4.3 pts
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Finishing high school is nearly universal in Acton: 98.0% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma has edged up 1.2 points since 2006–10, a smaller shift than nationally. Acton has a higher share of high school graduates than the great majority of Massachusetts cities.

High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).

Jobs in Acton

Unemployment, % of the labor force
PeriodActonBoston areaMassachusettsU.S.
2006–104.2%7.0%7.5%8.1%
2010–145.7%8.0%8.7%9.4%
2015–194.3%4.6%5.0%5.6%
2020–244.1%4.9%5.2%5.4%
Change−0.0 pts−2.1 pts−2.3 pts−2.7 pts
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Unemployment in Acton runs below the national rate: 4.1% of the labor force was out of work and looking, against 5.4% nationally. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current job market.

Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).

Acton compared with nearby cities

CityHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Acton2.5844.65.2%24.8%2.9%1975$1,81079.6%98.0%4.1%
Village Of Nagog Woods2.5242.73.7%28.2%3.8%1982$2,29581.8%98.6%5.4%
West Concord2.5747.28.2%36.2%9.3%1975$2,62473.8%94.9%3.8%
Maynard2.2245.96.2%24.4%6.0%1960$1,82165.1%95.0%5.5%
Boxborough2.4744.78.4%26.4%4.1%1986$2,24780.7%96.8%4.9%
Concord2.7648.37.1%18.1%7.3%1964$2,07184.3%98.4%4.0%
Littleton2.6743.87.1%16.6%4.8%1977$2,01258.2%95.5%5.7%
Stow2.6245.18.9%14.7%2.0%1971$2,24876.5%98.4%3.6%
Pine Lake2.8144.96.4%21.3%5.0%1982$1,71280.2%97.7%4.8%
Carlisle2.9845.25.3%6.4%2.3%1976$2,35487.4%98.9%4.1%
Harvard2.9343.42.5%9.3%7.8%1975$2,30176.9%99.6%4.7%

All figures 2020–24.

Cities with similar populations: Nogales, AZ · Pleasant Prairie, WI · Jesup, GA · Panama City Beach, FL · Boaz, AL · North Salt Lake, UT · Middletown, PA · Lucedale, MS · Lemont, IL · Lebanon, MO

About these numbers

Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Acton. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.

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