What kinds of homes are in Dennis, MA?

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

Dennis, MA has 15,381 (±544) homes (2020–2024 American Community Survey).

That is about 747 homes per square mile of land.

82.5% are detached single-family houses.

3.4% are in buildings of two to four units.

7.5% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 15,381 (±544)
Detached houses: 82.5%
2–4 unit buildings: 3.4%
5+ unit buildings: 7.5%

Homes in Dennis by building size

Housing units by units in structure, 2020–2024
Building type	Dennis	Barnstable County	Massachusetts	United States
Single-family, detached	82.5% (±2.6 points)	81.6%	51.1%	61.3%
Single-family, attached (townhouse, rowhouse)	4.7% (±1.4 points)	5.1%	5.9%	6.2%
2 units	1.6% (±0.7 points)	2.2%	9.3%	3.4%
3 or 4 units	1.8% (±0.8 points)	3.5%	10.7%	4.3%
5 to 9 units	2.4% (±1.0 points)	2.3%	5.7%	4.5%
10 to 19 units	2.3% (±0.8 points)	1.2%	4.2%	4.3%
20 or more units	2.8% (±1.0 points)	3.4%	12.3%	10.3%
Mobile home	1.8% (±1.1 points)	0.8%	0.8%	5.6%
Boat, RV, van, etc.	0.0% (±0.3 points)	0.0%	0.0%	0.1%

In Dennis, the share of homes in buildings of five or more units is not measurably different from Barnstable County (6.9%).

It is also lower than in Massachusetts (22.2%).

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

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

Nearest places with a published estimate, compared with Dennis
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Dennis	—	7.5% (±1.6 points)	—
Yarmouth Port	2.9 mi	4.8% (±1.7 points)	Lower
Northwest Harwich	3.2 mi	2.7% (±2.1 points)	Lower
South Yarmouth	3.3 mi	8.0% (±2.8 points)	Not measurably different
Yarmouth	3.8 mi	7.9% (±1.9 points)	Not measurably different
Harwich	4.9 mi	5.0% (±1.8 points)	Lower
Harwich Center	5.2 mi	11.7% (±8.9 points)	Not measurably different
Harwich Port	5.6 mi	11.5% (±5.1 points)	Not measurably different
Brewster	5.8 mi	8.6% (±3.4 points)	Not measurably different

Nearby places with a measurably lower figure: Yarmouth Port, MA (4.8%), Northwest Harwich, MA (2.7%), Harwich, MA (5.0%).

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 Barnstable County, place by place

Rank	Place	Homes in buildings of 5 or more units
1	Provincetown	18.4% (±5.6 points)
2	Barnstable Town	9.8% (±1.7 points)
3	Brewster	8.6% (±3.4 points)
4	Yarmouth	7.9% (±1.9 points)
5	Mashpee	7.6% (±2.4 points)
6 (tie)	Dennis	7.5% (±1.6 points)
6 (tie)	Orleans	7.5% (±2.5 points)
8	Bourne	7.1% (±2.0 points)
9	Falmouth	5.3% (±1.0 points)
10	Harwich	5.0% (±1.8 points)
11	Sandwich	4.5% (±2.0 points)
12	Chatham	3.3% (±1.7 points)

Showing 12 of 15 places in Barnstable County, ranked from highest to lowest.

The figures for Dennis include the places inside it that have pages of their own: Dennis (community), Dennis Port, East Dennis, South Dennis, West Dennis.

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 Dennis

How many homes are in Dennis?

Dennis, MA has an estimated 15,381 (±544) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Dennis houses or apartments?

82.5% are detached houses and 4.7% attached houses, while 10.9% are in buildings of two or more units.

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

3.4% of homes in Dennis 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 — Dennis town, Barnstable 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 Dennis town, Barnstable County, Massachusetts (county subdivision:16775, in state:25 county:001).

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.