What kinds of homes are in North Sea, NY?

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

North Sea, NY has 3,680 (±362) homes (2020–2024 American Community Survey).

That is about 333 homes per square mile of land.

95.1% are detached single-family houses.

1.8% are in buildings of two to four units.

0.4% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 3,680 (±362)
Detached houses: 95.1%
2–4 unit buildings: 1.8%
5+ unit buildings: 0.4%

Homes in North Sea by building size

Housing units by units in structure, 2020–2024
Building type	North Sea	Suffolk County	New York	United States
Single-family, detached	95.1% (±3.0 points)	79.7%	41.2%	61.3%
Single-family, attached (townhouse, rowhouse)	2.7% (±2.4 points)	5.9%	5.5%	6.2%
2 units	1.1% (±1.4 points)	2.6%	9.6%	3.4%
3 or 4 units	0.7% (±1.3 points)	2.1%	6.9%	4.3%
5 to 9 units	0.0% (±1.1 points)	2.2%	5.2%	4.5%
10 to 19 units	0.4% (±0.8 points)	2.6%	4.4%	4.3%
20 or more units	0.0% (±1.1 points)	3.6%	25.1%	10.3%
Mobile home	0.0% (±1.1 points)	1.3%	2.1%	5.6%
Boat, RV, van, etc.	0.0% (±1.1 points)	0.0%	0.0%	0.1%

In North Sea, the share of homes in buildings of five or more units is lower 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 North Sea

Nearest places with a published estimate, compared with North Sea
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
North Sea	—	0.4% (±1.7 points)	—
Tuckahoe (community)	2.5 mi	30.6% (±12.2 points)	Higher
Water Mill	3.0 mi	0.0% (±2.8 points)	Not measurably different
Village of Southampton	3.8 mi	5.5% (±2.5 points)	Higher
Shinnecock Hills	3.8 mi	6.5% (±5.1 points)	Higher
Shinnecock Reservation	4.2 mi	2.3% (±25.1 points)	Not measurably different
Noyack	4.5 mi	2.6% (±3.8 points)	Not measurably different
Bridgehampton	5.3 mi	0.7% (±2.8 points)	Not measurably different
Village of Sagaponack	7.2 mi	1.5% (±8.2 points)	Not measurably different

Nearby places with a measurably higher figure: Tuckahoe (community), NY (30.6%), Village of Southampton, NY (5.5%), Shinnecock Hills, NY (6.5%).

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
85 (tie)	Bridgehampton	0.7% (±2.8 points)
85 (tie)	Dix Hills	0.7% (±0.8 points)
85 (tie)	Fort Salonga	0.7% (±2.0 points)
85 (tie)	Mastic Beach	0.7% (±1.1 points)
89	Cold Spring Harbor	0.6% (±5.6 points)
90	West Islip	0.5% (±0.6 points)
91 (tie)	North Sea	0.4% (±1.7 points)
91 (tie)	Northwest Harbor	0.4% (±1.6 points)
91 (tie)	Stony Brook	0.4% (±1.3 points)
94 (tie)	Mattituck	0.3% (±2.5 points)
94 (tie)	Remsenburg-Speonk	0.3% (±4.0 points)
94 (tie)	Riverside (community)	0.3% (±5.3 points)
97	Sound Beach	0.2% (±2.0 points)

Showing 13 of 112 places in Suffolk County, ranked from highest to lowest.

North Sea 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 Southampton, 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 North Sea

How many homes are in North Sea?

North Sea, NY has an estimated 3,680 (±362) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in North Sea houses or apartments?

95.1% are detached houses and 2.7% attached houses, while 2.2% are in buildings of two or more units.

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

1.8% of homes in North Sea 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 — North Sea 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 North Sea CDP, New York (place:53561, 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.