What kinds of homes are in the Town of Islip, NY?

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

The Town of Islip, NY has 109,533 (±1,498) homes (2020–2024 American Community Survey).

That is about 1,061 homes per square mile of land.

75.1% are detached single-family houses.

4.8% are in buildings of two to four units.

11.1% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 109,533 (±1,498)
Detached houses: 75.1%
2–4 unit buildings: 4.8%
5+ unit buildings: 11.1%

Homes in the Town of Islip by building size

Housing units by units in structure, 2020–2024
Building type	Town of Islip	Suffolk County	New York	United States
Single-family, detached	75.1% (±1.0 points)	79.7%	41.2%	61.3%
Single-family, attached (townhouse, rowhouse)	8.0% (±0.8 points)	5.9%	5.5%	6.2%
2 units	2.2% (±0.4 points)	2.6%	9.6%	3.4%
3 or 4 units	2.6% (±0.4 points)	2.1%	6.9%	4.3%
5 to 9 units	2.7% (±0.4 points)	2.2%	5.2%	4.5%
10 to 19 units	3.6% (±0.4 points)	2.6%	4.4%	4.3%
20 or more units	4.8% (±0.5 points)	3.6%	25.1%	10.3%
Mobile home	1.0% (±0.3 points)	1.3%	2.1%	5.6%
Boat, RV, van, etc.	0.0% (±0.1 points)	0.0%	0.0%	0.1%

In the Town of Islip, the share of homes in buildings of five or more units is higher than in Suffolk County (8.4%).

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 the Town of Islip

Nearest places with a published estimate, compared with the Town of Islip
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Town of Islip	—	11.1% (±0.8 points)	—
Village of Brightwaters	3.5 mi	1.4% (±5.7 points)	Lower
Village of Ocean Beach	5.2 mi	1.0% (±9.7 points)	Lower
Village of Saltaire	5.3 mi	1.5% (±12.9 points)	Not measurably different
Village of Islandia	6.5 mi	8.4% (±5.2 points)	Not measurably different
North Babylon	6.9 mi	8.7% (±2.2 points)	Lower
Village of Babylon	7.0 mi	8.2% (±2.7 points)	Lower
Deer Park	7.4 mi	5.4% (±1.8 points)	Lower
Hauppauge	7.5 mi	13.0% (±2.8 points)	Not measurably different

Nearby places with a measurably lower figure: Village of Brightwaters, NY (1.4%), Village of Ocean Beach, NY (1.0%), North Babylon, NY (8.7%).

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 Suffolk County, place by place

Rank	Place	Homes in buildings of 5 or more units
1	Town of Islip	11.1% (±0.8 points)
2	Town of Brookhaven	10.7% (±0.7 points)
3	Town of Babylon	10.0% (±0.9 points)
4	Town of Smithtown	6.4% (±1.1 points)
5	Town of Riverhead	5.6% (±1.6 points)
6	Town of Huntington	4.4% (±0.5 points)
7	Town of Southampton	4.3% (±0.8 points)

Showing 7 of 12 places in Suffolk County, ranked from highest to lowest.

A New York town includes the villages and hamlets inside it, so the figures for the Town of Islip include them.

The figures for the Town of Islip include the places inside it that have pages of their own: Bayport, Bay Shore, Baywood, Bohemia, Central Islip, East Islip, Great River, Holbrook, +10.

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 Town of Islip

How many homes are in the Town of Islip?

The Town of Islip, NY has an estimated 109,533 (±1,498) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in the Town of Islip houses or apartments?

75.1% are detached houses and 8.0% attached houses, while 15.9% are in buildings of two or more units.

How many two-family and small multifamily homes are in the Town of Islip?

4.8% of homes in the Town of Islip 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 — Islip town, Suffolk County, 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 Islip town, Suffolk County, New York (county subdivision:38000, in state:36 county:103).

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.