What is the rental vacancy rate in Iselin, NJ?

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

The rental vacancy rate in Iselin, NJ is 0.9% (±1.4 points) (2020–2024 American Community Survey).

The homeowner vacancy rate is 0.2% (±0.4 points).

226 (±166) homes, 3.4% of all housing units, were vacant, a count that includes seasonal homes and homes being sold or rented.

In Iselin, the rental vacancy rate went from 1.2% in 2015–2019 to 0.9% in 2020–2024 (−0.3 percentage points), not a measurable change.

Figures last updated on November 12, 2026.

Rental vacancy rate: 0.9% (±1.4 points)
Homeowner vacancy rate: 0.2% (±0.4 points)
Vacant homes: 226 (±166)

Vacancy in Iselin against Middlesex County, its state and the nation

Estimate (90% margin of error)
	Iselin	Middlesex County	New Jersey	United States
Rental vacancy rate	0.9% (±1.4 points)	2.4% (±0.4 points)	3.5% (±0.2 points)	5.5%
Homeowner vacancy rate	0.2% (±0.4 points)	0.4% (±0.1 points)	0.7% (±0.1 points)	0.9%
Vacant housing units	226 (±166)	10,197 (±1,110)	283,653 (±4,943)	14,547,859

The rental vacancy rate is the share of rental homes that are vacant and for rent; it leaves out homes already rented but not yet moved into, and seasonal homes.

In Iselin, the rental vacancy rate is lower than in Middlesex County (2.4%).

It is also lower than in New Jersey (3.5%).

It is lower than the national figure (5.5%).

Rental vacancy rate in places near Iselin

Nearest places with a published estimate, compared with Iselin
Place	Distance	Rental vacancy rate	Compared with this place
Iselin	—	0.9% (±1.4 points)	—
Menlo Park Terrace	1.2 mi	0.0% (±29.7 points)	Not measurably different
Colonia	1.4 mi	0.0% (±6.3 points)	Not measurably different
Woodbridge	2.0 mi	3.0% (±2.2 points)	Not measurably different
Fords	2.4 mi	0.0% (±3.3 points)	Not measurably different
Avenel	2.5 mi	1.7% (±2.6 points)	Not measurably different
Metuchen Borough	3.1 mi	2.9% (±2.6 points)	Not measurably different
Hopelawn	3.1 mi	0.0% (±7.4 points)	Not measurably different
Rahway	3.2 mi	5.9% (±2.5 points)	Higher

Nearby places with a measurably higher figure: Rahway, NJ (5.9%).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Rental vacancy rate across Middlesex County, place by place

Rank	Place	Rental vacancy rate
1	Port Reading	41.2% (±45.7 points)
2	Rutgers University-Busch Campus	36.0% (±44.7 points)
3	Laurence Harbor	22.4% (±15.1 points)
4	Old Bridge	5.3% (±3.0 points)
5	Woodbridge	3.0% (±2.2 points)
6	Avenel	1.7% (±2.6 points)
7	Iselin	0.9% (±1.4 points)
8	Princeton Meadows	0.3% (±0.5 points)
9 (tie)	Brownville	0.0% (±32.0 points)
9 (tie)	Clearbrook	0.0% (±25.2 points)
9 (tie)	Colonia	0.0% (±6.3 points)
9 (tie)	Concordia	0.0% (±17.3 points)
9 (tie)	Cranbury	0.0% (±23.6 points)

Showing 13 of 32 places in Middlesex County, ranked from highest to lowest.

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

It lies inside Woodbridge Township, whose figures include it.

Survey years: 2020–2024 (American Community Survey 5-year estimates), compared with 2015–2019.

Margins of error are at the 90% confidence level.

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Questions about Iselin

Is it hard to find a rental in Iselin?

The rental vacancy rate in Iselin, NJ is 0.9% (±1.4 points); a low rate means few rental homes stand empty and for rent at any time, which usually means more competition for each one.

Is the rental market in Iselin tighter than it was?

In Iselin, the rental vacancy rate went from 1.2% in 2015–2019 to 0.9% in 2020–2024 (−0.3 percentage points), not a measurable change.

How many homes are vacant in Iselin?

An estimated 226 (±166) housing units, 3.4% of the total, including seasonal homes and homes waiting to be sold or rented.

Sources

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 Iselin CDP, New Jersey (place:34470, in state:34).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The 2015–2019 figures are DP04_0005E, DP04_0005M from the 2019 release.

The API needs a free key.

Request a Census API key.

DP04_0005E, DP04_0005M, DP04_0004E, DP04_0004M, DP04_0003E, DP04_0003M, DP04_0003PE, DP04_0003PM

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.