What kinds of homes are in Old Mystic, CT?

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

Old Mystic, CT has 1,390 (±149) homes (2020–2024 American Community Survey).

That is about 324 homes per square mile of land.

88.3% are detached single-family houses.

5.2% are in buildings of two to four units.

6.0% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 1,390 (±149)
Detached houses: 88.3%
2–4 unit buildings: 5.2%
5+ unit buildings: 6.0%

Homes in Old Mystic by building size

Housing units by units in structure, 2020–2024
Building type	Old Mystic	Southeastern Connecticut Planning Region	Connecticut	United States
Single-family, detached	88.3% (±5.8 points)	61.1%	58.6%	61.3%
Single-family, attached (townhouse, rowhouse)	0.5% (±0.9 points)	5.7%	6.5%	6.2%
2 units	2.4% (±2.1 points)	7.6%	7.5%	3.4%
3 or 4 units	2.8% (±3.6 points)	7.2%	8.1%	4.3%
5 to 9 units	0.0% (±3.0 points)	5.8%	4.9%	4.5%
10 to 19 units	2.2% (±3.4 points)	3.6%	3.5%	4.3%
20 or more units	3.8% (±3.0 points)	6.7%	10.2%	10.3%
Mobile home	0.0% (±3.0 points)	2.3%	0.7%	5.6%
Boat, RV, van, etc.	0.0% (±3.0 points)	0.0%	0.0%	0.1%

In Old Mystic, the share of homes in buildings of five or more units is lower than in Southeastern Connecticut Planning Region (16.1%).

It is also lower than in Connecticut (18.6%).

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

Homes in buildings of 5 or more units in places near Old Mystic

Nearest places with a published estimate, compared with Old Mystic
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Old Mystic	—	6.0% (±5.4 points)	—
Mystic	2.5 mi	15.2% (±4.0 points)	Higher
Noank	3.2 mi	10.1% (±5.4 points)	Not measurably different
Poquonock Bridge	3.5 mi	0.0% (±12.1 points)	Not measurably different
Ledyard	3.7 mi	3.9% (±2.5 points)	Not measurably different
Conning Towers-Nautilus Park	4.0 mi	15.4% (±6.9 points)	Higher
Long Hill (Southeastern Connecticut Planning Region)	4.1 mi	73.3% (±12.0 points)	Higher
Stonington	4.1 mi	8.2% (±1.5 points)	Not measurably different
Gales Ferry	5.7 mi	0.0% (±14.2 points)	Not measurably different

Nearby places with a measurably higher figure: Mystic, CT (15.2%), Conning Towers-Nautilus Park, CT (15.4%), Long Hill (Southeastern Connecticut Planning Region), CT (73.3%).

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 Southeastern Connecticut Planning Region, place by place

Rank	Place	Homes in buildings of 5 or more units
6	Conning Towers-Nautilus Park	15.4% (±6.9 points)
7	Mystic	15.2% (±4.0 points)
8	Pawcatuck	12.2% (±4.5 points)
9	Niantic	11.9% (±6.9 points)
10	Noank	10.1% (±5.4 points)
11	South Windham	6.3% (±13.3 points)
12	Old Mystic	6.0% (±5.4 points)
13	Oxoboxo River	5.1% (±3.4 points)
14 (tie)	Gales Ferry	0.0% (±14.2 points)
14 (tie)	Poquonock Bridge	0.0% (±12.1 points)

Showing 10 of 15 places in Southeastern Connecticut Planning Region, ranked from highest to lowest.

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

It lies inside Groton, 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 Old Mystic

How many homes are in Old Mystic?

Old Mystic, CT has an estimated 1,390 (±149) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Old Mystic houses or apartments?

88.3% are detached houses and 0.5% attached houses, while 11.2% are in buildings of two or more units.

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

5.2% of homes in Old Mystic 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 — Old Mystic CDP, Connecticut

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 Old Mystic CDP, Connecticut (place:57180, in state:09).

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.