Iselin, NJ Profile: Facts & Data

The Iselin CDP⁽¹⁾ had a population of 20,327 as of July 1, 2024. Iselin ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in New Jersey. See peer rankings below.

The primary coordinate point for Iselin is located at latitude 40.5754 and longitude -74.3224 in Middlesex County. The formal boundaries for the Iselin Census Designated Place encompass a land area of 3.19 sq. miles and a water area of 0 sq. miles. Middlesex County is in the Eastern time zone (GMT -5).

The Iselin Census Designated Place has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

A Census Designated Place (CDP) is a statistical counterpart to a self-governing (incorporated) place such as a city, town, or village. A CDP is not a legal entity and has no governmental functions.

Iselin, NJ Data & Demographics (As of July 1, 2024)

POPULATION
Total Population	20,327 (100%)
Population in Households	20,320 (100.0%)
Population in Families	18,073 (88.9%)
Population in Group Quarters¹	7 ( 0.0%)
Population Density	6,450
Diversity Index²	66


INCOME
Median Household Income	$117,607
Average Household Income	$154,837
% of Income for Mortgage⁴	25%
Per Capita Income	$51,951
Wealth Index⁵	137
Socioeconomic Status Index⁶	Moderate (54.1)

HOUSING
Total HU (Housing Units)	7,219 (100%)
Owner Occupied HU	4,268 (59.1%)
Renter Occupied HU	2,552 (35.4%)
Vacant Housing Units	399 ( 5.5%)
Median Home Value	$460,518
Average Home Value	$488,250
Housing Affordability Index³	85

HOUSEHOLDS
Total Households	6,820
Average Household Size	2.98
Family Households	5,159
Average Family Size	4.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

Iselin, NJ - Peer Comparisons by Rank and Percentile

The table below compares Iselin to the other 700 incorporated cities, towns and CDPs in New Jersey by rank and percentile using July 1, 2024 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

GROWTH RATE / YEAR	2020-2024	2024-2029
Population	0.28%	0.25%
Households	0.42%	0.60%
Families		0.47%
Median Household Income		2.70%
Per Capita Income		2.76%
Owner Occupied HU		0.91%

Variable Description	Rank	Percentile
Total Population	# 57	92nd
Population Density	# 83	88th
Median Household Income	# 251	64th
Housing Affordability Index	# 404	58th
Per Capita Income	# 392	44th
Diversity Index	# 208	70th

Iselin, NJ Profile: Facts & Data

Iselin, New Jersey - Basic Facts

Iselin, NJ Data & Demographics (As of July 1, 2024)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Iselin, NJ - Peer Comparisons by Rank and Percentile

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