What kinds of homes are in Acton, MA?

Name: Types of homes in Acton, MA, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Acton, MA has 9,575 (±328) homes (2020–2024 American Community Survey).

That is about 482 homes per square mile of land.

63.3% are detached single-family houses.

4.5% are in buildings of two to four units.

23.6% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 9,575 (±328)
Detached houses: 63.3%
2–4 unit buildings: 4.5%
5+ unit buildings: 23.6%

Homes in Acton by building size

Housing units by units in structure, 2020–2024
Building type	Acton	Middlesex County	Massachusetts	United States
Single-family, detached	63.3% (±3.0 points)	46.5%	51.1%	61.3%
Single-family, attached (townhouse, rowhouse)	8.3% (±1.5 points)	6.9%	5.9%	6.2%
2 units	2.6% (±1.0 points)	12.2%	9.3%	3.4%
3 or 4 units	1.9% (±0.8 points)	8.5%	10.7%	4.3%
5 to 9 units	3.7% (±1.4 points)	4.7%	5.7%	4.5%
10 to 19 units	9.0% (±2.1 points)	5.1%	4.2%	4.3%
20 or more units	10.9% (±3.1 points)	15.7%	12.3%	10.3%
Mobile home	0.0% (±0.4 points)	0.4%	0.8%	5.6%
Boat, RV, van, etc.	0.5% (±0.5 points)	0.1%	0.0%	0.1%

In Acton, the share of homes in buildings of five or more units is not measurably different from Middlesex County (25.5%).

It is not measurably different from Massachusetts (22.2%).

It is higher than the national figure (19.1%).

Homes in buildings of 5 or more units in places near Acton

Nearest places with a published estimate, compared with Acton
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Acton	—	23.6% (±4.0 points)	—
West Concord	2.9 mi	36.8% (±7.9 points)	Higher
Littleton Common	3.9 mi	6.3% (±7.8 points)	Lower
Concord	4.0 mi	18.4% (±3.5 points)	Not measurably different
Maynard (community)	4.1 mi	16.7% (±4.4 points)	Lower
Maynard	4.1 mi	16.7% (±4.4 points)	Lower
Boxborough	4.2 mi	34.3% (±9.7 points)	Higher
Littleton	4.5 mi	8.6% (±3.4 points)	Lower
Stow	5.3 mi	9.4% (±6.6 points)	Lower

Nearby places with a measurably lower figure: Littleton Common, MA (6.3%), Maynard (community), MA (16.7%), Maynard, MA (16.7%).

Nearby places with a measurably higher figure: West Concord, MA (36.8%), Boxborough, MA (34.3%).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Homes in buildings of 5 or more units across Middlesex County, place by place

Rank	Place	Homes in buildings of 5 or more units
10	Marlborough	28.7% (±3.4 points)
11	Natick	28.2% (±3.4 points)
12	Melrose	27.5% (±3.5 points)
13 (tie)	Medford	25.0% (±2.1 points)
13 (tie)	Woburn	25.0% (±2.8 points)
15	Arlington	24.9% (±2.9 points)
16	Acton	23.6% (±4.0 points)
17	Burlington	22.5% (±3.5 points)
18	Everett	21.8% (±3.0 points)
19	Hudson	21.6% (±4.2 points)
20	Wakefield	20.3% (±2.8 points)
21	Dracut	19.9% (±3.8 points)
22	Chelmsford	19.0% (±3.1 points)

Showing 13 of 54 places in Middlesex County, ranked from highest to lowest.

Survey years: 2020–2024 (American Community Survey 5-year estimates).

Margins of error are at the 90% confidence level.

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Questions about Acton

How many homes are in Acton?

Acton, MA has an estimated 9,575 (±328) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Acton houses or apartments?

63.3% are detached houses and 8.3% attached houses, while 28.1% are in buildings of two or more units.

How many two-family and small multifamily homes are in Acton?

4.5% of homes in Acton are in buildings of two to four units, the small rental buildings that are often owner-occupied.

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Acton town, Middlesex County, Massachusetts

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Acton town, Middlesex County, Massachusetts (county subdivision:00380, in state:25 county:017).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The API needs a free key.

Request a Census API key.

DP04_0001E, DP04_0001M, DP04_0007PE, DP04_0007PM, DP04_0008PE, DP04_0008PM, DP04_0009PE, DP04_0009PM, DP04_0010PE, DP04_0010PM, DP04_0011PE, DP04_0011PM, DP04_0012PE, DP04_0012PM, DP04_0013PE, DP04_0013PM, DP04_0014PE, DP04_0014PM, DP04_0015PE, DP04_0015PM

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.