What kinds of homes are in Thornwood, NY?

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

Thornwood, NY has 1,488 (±165) homes (2020–2024 American Community Survey).

That is about 1,332 homes per square mile of land.

81.4% are detached single-family houses.

7.9% are in buildings of two to four units.

6.5% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 1,488 (±165)
Detached houses: 81.4%
2–4 unit buildings: 7.9%
5+ unit buildings: 6.5%

Homes in Thornwood by building size

Housing units by units in structure, 2020–2024
Building type	Thornwood	Westchester County	New York	United States
Single-family, detached	81.4% (±6.1 points)	43.4%	41.2%	61.3%
Single-family, attached (townhouse, rowhouse)	1.3% (±1.7 points)	6.4%	5.5%	6.2%
2 units	3.4% (±4.2 points)	7.7%	9.6%	3.4%
3 or 4 units	4.5% (±4.0 points)	7.0%	6.9%	4.3%
5 to 9 units	1.5% (±2.1 points)	5.0%	5.2%	4.5%
10 to 19 units	3.0% (±3.4 points)	5.1%	4.4%	4.3%
20 or more units	2.0% (±2.4 points)	25.2%	25.1%	10.3%
Mobile home	2.8% (±3.9 points)	0.2%	2.1%	5.6%
Boat, RV, van, etc.	0.0% (±2.8 points)	0.0%	0.0%	0.1%

In Thornwood, the share of homes in buildings of five or more units is lower than in Westchester County (35.3%).

It is also lower than in New York (34.7%).

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

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

Nearest places with a published estimate, compared with Thornwood
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Thornwood	—	6.5% (±4.7 points)	—
Village of Pleasantville	1.1 mi	17.4% (±5.3 points)	Higher
Hawthorne	1.4 mi	1.3% (±2.9 points)	Not measurably different
Chappaqua	2.7 mi	6.9% (±6.0 points)	Not measurably different
Valhalla	2.8 mi	1.6% (±5.9 points)	Not measurably different
Armonk	3.3 mi	12.5% (±9.4 points)	Not measurably different
Village of Briarcliff Manor	3.9 mi	18.0% (±5.5 points)	Higher
Town of New Castle	4.4 mi	4.6% (±2.4 points)	Not measurably different
Town of Ossining	4.8 mi	27.4% (±3.3 points)	Higher

Nearby places with a measurably higher figure: Village of Pleasantville, NY (17.4%), Village of Briarcliff Manor, NY (18.0%), Town of Ossining, NY (27.4%).

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 Westchester County, place by place

Rank	Place	Homes in buildings of 5 or more units
8	Bedford Hills	18.8% (±10.1 points)
9	Armonk	12.5% (±9.4 points)
10 (tie)	Lake Mohegan	9.9% (±8.5 points)
10 (tie)	Montrose	9.9% (±6.0 points)
12	Golden's Bridge	7.2% (±11.9 points)
13	Chappaqua	6.9% (±6.0 points)
14	Thornwood	6.5% (±4.7 points)
15	Crompond	6.0% (±8.8 points)
16	Jefferson Valley-Yorktown	5.9% (±1.9 points)
17	Katonah	3.2% (±9.0 points)
18 (tie)	Millwood	1.6% (±12.0 points)
18 (tie)	Valhalla	1.6% (±5.9 points)
20	Hawthorne	1.3% (±2.9 points)

Showing 13 of 24 places in Westchester County, ranked from highest to lowest.

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

It lies inside the Town of Mount Pleasant, 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 Thornwood

How many homes are in Thornwood?

Thornwood, NY has an estimated 1,488 (±165) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Thornwood houses or apartments?

81.4% are detached houses and 1.3% attached houses, while 14.4% are in buildings of two or more units.

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

7.9% of homes in Thornwood 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 — Thornwood CDP, New York

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 Thornwood CDP, New York (place:73715, in state:36).

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.