North Plainfield, NJ Profile: Facts, Map & Data


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North Plainfield, New Jersey - Basic Facts

The Borough of North Plainfield had a population of 22,116 as of July 1, 2016. North Plainfield ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in New Jersey. See peer rankings below.

The primary coordinate point for North Plainfield is located at latitude 40.6213 and longitude -74.4395 in Somerset County. The formal boundaries for the Borough of North Plainfield (see map below) encompass a land area of 2.79 sq. miles and a water area of 0.01 sq. miles. Somerset County is in the Eastern time zone (GMT -5). The elevation is 121 feet.

The Borough of North Plainfield (GNIS ID: 885326) has a C5 Census Class Code which indicates an active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

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

Neighborhood Data

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Borough of North Plainfield, NJ Boundary Map

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


Total Population 22,116
Population in Households 22,085
Population in Familes 18,045
Population in Group Qrtrs 31
Population Density1 7,914
Diversity Index2 85


Total Households 7,396
Average Household Size 2.99
Family Households 5,246
Average Family Size 3


Total Housing Units 8,038 (100%)
Owner Occupied HU 3,949 (49.1%)
Renter Occupied HU 3,447 (42.9%)
Vacant Housing Units 642 ( 8.0%)
Median Home Value $282,751
Average Home Value $293,226


Median Household Income $65,532
Average Household Income $83,925
Per Capita Income $28,119
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.13% 0.32%
Households -0.11% 0.18%
Families -0.06% 0.22%
Median Household Income   2.92%
Per Capita Income   1.43%
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.

North Plainfield, NJ - Peer Comparisons by Rank and Percentile

The table below compares North Plainfield 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 # 45 92nd
Population Density1 # 44 92nd
Diversity Index2 # 15 97th
Median Household Income # 351 36th
Per Capita Income # 434 21st

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