What kinds of homes are in South Dennis, MA?

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

South Dennis, MA has 2,616 (±265) homes (2020–2024 American Community Survey).

That is about 575 homes per square mile of land.

86.5% are detached single-family houses.

2.1% are in buildings of two to four units.

3.2% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 2,616 (±265)
Detached houses: 86.5%
2–4 unit buildings: 2.1%
5+ unit buildings: 3.2%

Homes in South Dennis by building size

Housing units by units in structure, 2020–2024
Building type	South Dennis	Barnstable County	Massachusetts	United States
Single-family, detached	86.5% (±5.1 points)	81.6%	51.1%	61.3%
Single-family, attached (townhouse, rowhouse)	3.3% (±2.5 points)	5.1%	5.9%	6.2%
2 units	0.4% (±0.7 points)	2.2%	9.3%	3.4%
3 or 4 units	1.7% (±1.8 points)	3.5%	10.7%	4.3%
5 to 9 units	0.3% (±0.5 points)	2.3%	5.7%	4.5%
10 to 19 units	2.4% (±1.8 points)	1.2%	4.2%	4.3%
20 or more units	0.5% (±0.8 points)	3.4%	12.3%	10.3%
Mobile home	4.7% (±4.4 points)	0.8%	0.8%	5.6%
Boat, RV, van, etc.	0.0% (±1.6 points)	0.0%	0.0%	0.1%

In South Dennis, the share of homes in buildings of five or more units is lower than in 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 South Dennis

Nearest places with a published estimate, compared with South Dennis
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
South Dennis	—	3.2% (±2.0 points)	—
East Dennis	2.2 mi	6.1% (±5.0 points)	Not measurably different
Northwest Harwich	2.4 mi	2.7% (±2.1 points)	Not measurably different
Dennis Port	2.6 mi	11.1% (±3.3 points)	Higher
West Dennis	2.7 mi	9.1% (±4.0 points)	Higher
Dennis (community)	3.0 mi	3.7% (±3.7 points)	Not measurably different
Yarmouth Port	3.6 mi	4.8% (±1.7 points)	Not measurably different
South Yarmouth	3.6 mi	8.0% (±2.8 points)	Higher
Harwich	4.2 mi	5.0% (±1.8 points)	Not measurably different

Nearby places with a measurably higher figure: Dennis Port, MA (11.1%), West Dennis, MA (9.1%), South Yarmouth, MA (8.0%).

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
14	Pocasset	7.6% (±7.2 points)
15	Brewster (community)	7.5% (±6.0 points)
16	Buzzards Bay	7.1% (±4.3 points)
17	East Dennis	6.1% (±5.0 points)
18	Yarmouth Port	4.8% (±1.7 points)
19	Dennis (community)	3.7% (±3.7 points)
20	South Dennis	3.2% (±2.0 points)
21	Northwest Harwich	2.7% (±2.1 points)
22	Teaticket	2.0% (±4.4 points)
23	West Falmouth	1.3% (±5.1 points)
24	East Sandwich	1.2% (±2.4 points)
25	East Falmouth	1.1% (±1.7 points)
26	North Falmouth	1.0% (±2.0 points)

Showing 13 of 31 places in Barnstable County, ranked from highest to lowest.

South Dennis is a census-designated place: an unincorporated community the Census Bureau draws for statistics, with no municipal government of its own.

It lies inside Dennis, whose figures include it.

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 South Dennis

How many homes are in South Dennis?

South Dennis, MA has an estimated 2,616 (±265) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in South Dennis houses or apartments?

86.5% are detached houses and 3.3% attached houses, while 5.3% are in buildings of two or more units.

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

2.1% of homes in South 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 — South Dennis CDP, 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 South Dennis CDP, Massachusetts (place:63655, in state:25).

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.