What kinds of homes are in Blackwells Mills, NJ?

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

Blackwells Mills, NJ has 3,078 (±257) homes (2020–2024 American Community Survey).

That is about 401 homes per square mile of land.

97.3% are detached single-family houses.

1.4% are in buildings of two to four units.

1.2% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 3,078 (±257)
Detached houses: 97.3%
2–4 unit buildings: 1.4%
5+ unit buildings: 1.2%

Homes in Blackwells Mills by building size

Housing units by units in structure, 2020–2024
Building type	Blackwells Mills	Somerset County	New Jersey	United States
Single-family, detached	97.3% (±2.5 points)	57.8%	52.6%	61.3%
Single-family, attached (townhouse, rowhouse)	0.0% (±1.4 points)	14.5%	10.0%	6.2%
2 units	0.8% (±1.4 points)	5.2%	8.6%	3.4%
3 or 4 units	0.6% (±1.1 points)	4.5%	6.1%	4.3%
5 to 9 units	0.0% (±1.4 points)	5.1%	4.6%	4.5%
10 to 19 units	1.2% (±1.8 points)	5.1%	4.9%	4.3%
20 or more units	0.0% (±1.4 points)	7.6%	12.3%	10.3%
Mobile home	0.0% (±1.4 points)	0.2%	0.9%	5.6%
Boat, RV, van, etc.	0.0% (±1.4 points)	0.0%	0.0%	0.1%

In Blackwells Mills, the share of homes in buildings of five or more units is lower than in Somerset County (17.8%).

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 Blackwells Mills

Nearest places with a published estimate, compared with Blackwells Mills
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Blackwells Mills	—	1.2% (±2.7 points)	—
Millstone Borough	1.3 mi	0.9% (±26.3 points)	Not measurably different
Franklin Township (Somerset County)	2.5 mi	23.2% (±2.7 points)	Higher
Weston	3.1 mi	22.5% (±7.6 points)	Higher
Belle Mead	3.2 mi	24.6% (±8.1 points)	Higher
Hillsborough	3.4 mi	20.6% (±3.8 points)	Higher
Six Mile Run	3.5 mi	22.3% (±11.0 points)	Higher
Middlebush	3.6 mi	0.0% (±11.1 points)	Not measurably different
Franklin Park	3.9 mi	34.1% (±6.9 points)	Higher

Nearby places with a measurably higher figure: Franklin Township (Somerset County), NJ (23.2%), Weston, NJ (22.5%), Belle Mead, NJ (24.6%).

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
17	Bradley Gardens	11.2% (±3.8 points)
18	Martinsville	7.0% (±3.0 points)
19	Bridgewater Center	6.2% (±4.2 points)
20	Lyons	2.8% (±4.9 points)
21	Ten Mile Run	2.4% (±9.6 points)
22	Bedminster	2.1% (±11.2 points)
23	Blackwells Mills	1.2% (±2.7 points)
24	Middlebush	0.0% (±11.1 points)

Showing 8 of 24 places in Somerset County, ranked from highest to lowest.

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

It lies inside Hillsborough Township, whose figures include it.

Survey years: 2020–2024 (American Community Survey 5-year estimates).

Margins of error are at the 90% confidence level.

What you can do on Seayora in Blackwells Mills

One account for renting, owning, managing and fixing homes, with these figures beside you.

Own or manage a rental?

List it, sign the lease and collect rent online, with the figures for Blackwells Mills beside you.

Create a landlord account · See what landlords get

Looking for a place to rent?

Browse homes for rent near Blackwells Mills, save the ones you like and apply online.

Browse rentals · Create a renter account

Do repairs, renovations or maintenance?

Get found by owners and renters near Blackwells Mills, and send estimates and invoices from your phone.

Join as a pro · Find a pro

Questions about Blackwells Mills

How many homes are in Blackwells Mills?

Blackwells Mills, NJ has an estimated 3,078 (±257) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Blackwells Mills houses or apartments?

97.3% are detached houses and 0.0% attached houses, while 2.6% are in buildings of two or more units.

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

1.4% of homes in Blackwells Mills 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 — Blackwells Mills 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 Blackwells Mills CDP, New Jersey (place:06025, 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.