Williamstown, NJ Profile: Facts, Map & Data


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Williamstown, New Jersey - Basic Facts

The Williamstown Census Designated Place had a population of 15,512 as of July 1, 2016.

The primary coordinate point for Williamstown is located at latitude 39.6841 and longitude -74.9688 in Gloucester County. The formal boundaries for the Williamstown Census Designated Place (see map below) encompass a land area of 7.42 sq. miles and a water area of 0 sq. miles. Gloucester County is in the Eastern time zone (GMT -5). The elevation is 144 feet.

The Williamstown Census Designated Place (GNIS ID: 2390518) 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.

The Williamstown Census Designated Place is located within Township of Monroe, a minor civil division (MCD) of Gloucester County.

Beneath the boundary map are tables with Williamstown population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Alternate Unofficial Names for Williamstown: Squankum, Squankum Neck, Squankum Village, Williams Town.

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


Williamstown Census Designated Place, NJ Boundary Map

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Boundary Maps: Township of Monroe | Gloucester County | New Jersey Counties

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Williamstown, NJ Data & Demographics (As of July 1, 2016)


Total Population 15,512
Population in Households 15,356
Population in Familes 13,036
Population in Group Qrtrs 156
Population Density1 2,091
Diversity Index2 46


Total Households 5,528
Average Household Size 2.78
Family Households 3,953
Average Family Size 3


Total Housing Units 5,924 (100%)
Owner Occupied HU 4,043 (68.2%)
Renter Occupied HU 1,485 (25.1%)
Vacant Housing Units 396 ( 6.7%)
Median Home Value $201,921
Average Home Value $217,116


Median Household Income $60,875
Average Household Income $76,498
Per Capita Income $27,886
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -0.06% 0.21%
Households -0.18% 0.13%
Families -0.33% 0.1%
Median Household Income   0.49%
Per Capita Income   1.03%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Williamstown, NJ - Peer Comparisons by Rank and Percentile

The table below compares Williamstown to the other 545 incorporated cities, towns and CDPs in New Jersey by rank and percentile using July 1, 2016 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.

Variable Description Rank Percentile
Total Population # 71 87th
Population Density1 # 323 41st
Diversity Index2 # 235 57th
Median Household Income # 390 29th
Per Capita Income # 439 20th

Additional comparisons and rankings can be made with a VERY EASY TO USE New Jersey Census Data Comparison Tool.

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