What kinds of homes are in St. James, NY?

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

St. James, NY has 5,064 (±399) homes (2020–2024 American Community Survey).

That is about 1,110 homes per square mile of land.

75.0% are detached single-family houses.

3.6% are in buildings of two to four units.

9.1% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 5,064 (±399)
Detached houses: 75.0%
2–4 unit buildings: 3.6%
5+ unit buildings: 9.1%

Homes in St. James by building size

Housing units by units in structure, 2020–2024
Building type	St. James	Suffolk County	New York	United States
Single-family, detached	75.0% (±4.6 points)	79.7%	41.2%	61.3%
Single-family, attached (townhouse, rowhouse)	12.3% (±2.6 points)	5.9%	5.5%	6.2%
2 units	1.6% (±0.9 points)	2.6%	9.6%	3.4%
3 or 4 units	2.0% (±1.1 points)	2.1%	6.9%	4.3%
5 to 9 units	7.8% (±4.3 points)	2.2%	5.2%	4.5%
10 to 19 units	0.8% (±0.8 points)	2.6%	4.4%	4.3%
20 or more units	0.5% (±0.7 points)	3.6%	25.1%	10.3%
Mobile home	0.0% (±0.8 points)	1.3%	2.1%	5.6%
Boat, RV, van, etc.	0.0% (±0.8 points)	0.0%	0.0%	0.1%

In St. James, the share of homes in buildings of five or more units is not measurably different from 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 St. James

Nearest places with a published estimate, compared with St. James
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
St. James	—	9.1% (±4.4 points)	—
Village of Head of the Harbor	1.5 mi	1.1% (±10.2 points)	Not measurably different
Nesconset	2.0 mi	10.3% (±4.7 points)	Not measurably different
Village of Village of the Branch	2.2 mi	1.7% (±10.2 points)	Not measurably different
Village of Lake Grove	2.2 mi	15.7% (±5.3 points)	Not measurably different
Stony Brook	2.5 mi	0.4% (±1.3 points)	Lower
Village of Nissequogue	2.5 mi	0.0% (±11.3 points)	Not measurably different
Smithtown (community)	3.6 mi	6.6% (±2.2 points)	Not measurably different
Centereach	3.7 mi	6.4% (±2.1 points)	Not measurably different

Nearby places with a measurably lower figure: Stony Brook, NY (0.4%).

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 Suffolk County, place by place

Rank	Place	Homes in buildings of 5 or more units
31	Baiting Hollow	10.9% (±5.5 points)
32	Nesconset	10.3% (±4.7 points)
33	Halesite	10.1% (±8.2 points)
34	Kings Park	9.8% (±3.6 points)
35 (tie)	East Islip	9.2% (±4.3 points)
35 (tie)	Wheatley Heights	9.2% (±3.7 points)
37	St. James	9.1% (±4.4 points)
38	North Babylon	8.7% (±2.2 points)
39	East Setauket	8.0% (±3.2 points)
40 (tie)	Ridge	7.8% (±3.1 points)
40 (tie)	Terryville	7.8% (±2.4 points)
42	North Lindenhurst	7.1% (±2.9 points)
43	Farmingville	6.9% (±3.5 points)

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

St. James 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 Smithtown, 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 St. James

How many homes are in St. James?

St. James, NY has an estimated 5,064 (±399) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in St. James houses or apartments?

75.0% are detached houses and 12.3% attached houses, while 12.7% are in buildings of two or more units.

How many two-family and small multifamily homes are in St. James?

3.6% of homes in St. James 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 — St. James 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 St. James CDP, New York (place:64584, 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.