What kinds of homes are in Green Knoll, NJ?

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

Green Knoll, NJ has 2,495 (±253) homes (2020–2024 American Community Survey).

That is about 538 homes per square mile of land.

68.9% are detached single-family houses.

0.8% are in buildings of two to four units.

16.8% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 2,495 (±253)
Detached houses: 68.9%
2–4 unit buildings: 0.8%
5+ unit buildings: 16.8%

Homes in Green Knoll by building size

Housing units by units in structure, 2020–2024
Building type	Green Knoll	Somerset County	New Jersey	United States
Single-family, detached	68.9% (±6.0 points)	57.8%	52.6%	61.3%
Single-family, attached (townhouse, rowhouse)	12.7% (±3.9 points)	14.5%	10.0%	6.2%
2 units	0.0% (±1.8 points)	5.2%	8.6%	3.4%
3 or 4 units	0.8% (±0.8 points)	4.5%	6.1%	4.3%
5 to 9 units	1.1% (±1.1 points)	5.1%	4.6%	4.5%
10 to 19 units	1.3% (±1.0 points)	5.1%	4.9%	4.3%
20 or more units	14.4% (±5.5 points)	7.6%	12.3%	10.3%
Mobile home	0.3% (±0.6 points)	0.2%	0.9%	5.6%
Boat, RV, van, etc.	0.5% (±0.8 points)	0.0%	0.0%	0.1%

In Green Knoll, the share of homes in buildings of five or more units is not measurably different from Somerset County (17.8%).

It is not measurably different from New Jersey (21.8%).

It is not measurably different from the national figure (19.1%).

Homes in buildings of 5 or more units in places near Green Knoll

Nearest places with a published estimate, compared with Green Knoll
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Green Knoll	—	16.8% (±5.7 points)	—
Bridgewater Center	1.7 mi	6.2% (±4.2 points)	Lower
Martinsville	2.0 mi	7.0% (±3.0 points)	Lower
Somerville Borough	2.4 mi	40.0% (±5.8 points)	Higher
Raritan Borough	2.8 mi	21.8% (±4.7 points)	Not measurably different
The Hills	3.4 mi	19.6% (±5.1 points)	Not measurably different
Bradley Gardens	3.4 mi	11.2% (±3.8 points)	Not measurably different
Finderne	3.7 mi	31.8% (±8.7 points)	Higher
Liberty Corner	4.3 mi	14.4% (±8.5 points)	Not measurably different

Nearby places with a measurably lower figure: Bridgewater Center, NJ (6.2%), Martinsville, NJ (7.0%).

Nearby places with a measurably higher figure: Somerville Borough, NJ (40.0%), Finderne, NJ (31.8%).

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 Somerset County, place by place

Rank	Place	Homes in buildings of 5 or more units
7	Somerset	23.4% (±4.6 points)
8	Weston	22.5% (±7.6 points)
9	Six Mile Run	22.3% (±11.0 points)
10	Kingston	21.1% (±15.7 points)
11	Hillsborough	20.6% (±3.8 points)
12	The Hills	19.6% (±5.1 points)
13	Green Knoll	16.8% (±5.7 points)
14	Liberty Corner	14.4% (±8.5 points)
15	East Franklin	13.6% (±8.4 points)
16	Basking Ridge	11.7% (±5.6 points)
17	Bradley Gardens	11.2% (±3.8 points)
18	Martinsville	7.0% (±3.0 points)
19	Bridgewater Center	6.2% (±4.2 points)

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

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

It lies inside Bridgewater Township, 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 Green Knoll

How many homes are in Green Knoll?

Green Knoll, NJ has an estimated 2,495 (±253) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Green Knoll houses or apartments?

68.9% are detached houses and 12.7% attached houses, while 17.6% are in buildings of two or more units.

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

0.8% of homes in Green Knoll 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 — Green Knoll CDP, 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 Green Knoll CDP, New Jersey (place:27840, 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.