What kinds of homes are in Greenwich, NJ?

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

Greenwich, NJ has 844 (±130) homes (2020–2024 American Community Survey).

That is about 931 homes per square mile of land.

90.6% are detached single-family houses.

0.5% are in buildings of two to four units.

0.0% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 844 (±130)
Detached houses: 90.6%
2–4 unit buildings: 0.5%
5+ unit buildings: 0.0%

Homes in Greenwich by building size

Housing units by units in structure, 2020–2024
Building type	Greenwich	Warren County	New Jersey	United States
Single-family, detached	90.6% (±7.4 points)	68.1%	52.6%	61.3%
Single-family, attached (townhouse, rowhouse)	8.9% (±7.4 points)	11.4%	10.0%	6.2%
2 units	0.5% (±0.7 points)	4.4%	8.6%	3.4%
3 or 4 units	0.0% (±5.2 points)	3.4%	6.1%	4.3%
5 to 9 units	0.0% (±5.2 points)	3.3%	4.6%	4.5%
10 to 19 units	0.0% (±5.2 points)	4.2%	4.9%	4.3%
20 or more units	0.0% (±5.2 points)	4.3%	12.3%	10.3%
Mobile home	0.0% (±5.2 points)	0.9%	0.9%	5.6%
Boat, RV, van, etc.	0.0% (±5.2 points)	0.0%	0.0%	0.1%

In Greenwich, the share of homes in buildings of five or more units is lower than in Warren County (11.8%).

It is also lower than in New Jersey (21.8%).

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

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

Nearest places with a published estimate, compared with Greenwich
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Greenwich	—	0.0% (±9.0 points)	—
Upper Pohatcong	1.3 mi	0.0% (±10.4 points)	Not measurably different
Alpha Borough	2.1 mi	8.6% (±4.5 points)	Not measurably different
Lopatcong Township	2.3 mi	22.9% (±6.0 points)	Higher
Phillipsburg Town	2.4 mi	14.4% (±3.8 points)	Higher
Bloomsbury Borough	3.6 mi	4.3% (±15.4 points)	Not measurably different
Morgan Hill	3.9 mi	35.4% (±23.5 points)	Higher
Pohatcong Township	4.0 mi	0.7% (±4.2 points)	Not measurably different
Harmony Township	4.4 mi	1.9% (±6.5 points)	Not measurably different

Nearby places with a measurably higher figure: Lopatcong Township, NJ (22.9%), Phillipsburg Town, NJ (14.4%), Morgan Hill, PA (35.4%).

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 Warren County, place by place

Rank	Place	Homes in buildings of 5 or more units
1	Beattystown	32.5% (±10.6 points)
2	Panther Valley	6.8% (±5.7 points)
3	Oxford	5.2% (±11.5 points)
4 (tie)	Brass Castle	0.0% (±10.6 points)
4 (tie)	Greenwich	0.0% (±9.0 points)
4 (tie)	Upper Pohatcong	0.0% (±10.4 points)

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

It lies inside Greenwich Township (Warren County), 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 Greenwich

How many homes are in Greenwich?

Greenwich, NJ has an estimated 844 (±130) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Greenwich houses or apartments?

90.6% are detached houses and 8.9% attached houses, while 0.5% are in buildings of two or more units.

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

0.5% of homes in Greenwich 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 — Greenwich CDP (Warren County), New Jersey

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 Greenwich CDP (Warren County), New Jersey (place:28250, in state:34).

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.