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 22,498 as of July 1, 2017. 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, 2017.

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Borough of North Plainfield, NJ Boundary Map

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North Plainfield, NJ Data & Demographics (As of July 1, 2017)


Total Population 22,498
Daytime Population: Workers 4,779
Daytime Population: Residents 9,792
Total Daytime Population (TDP) 14,571
Ratio TDP/Total Population1 0.65
Population in Households 22,467
Population in Familes 18,339
Population in Group Qrtrs 31
Population Density2 8,051
Diversity Index3 85


Median Household Income $65,651
Average Household Income $85,178
Per Capita Income $28,644


Total Housing Units 8,032 (100%)
Owner Occupied HU 3,948 (49.2%)
Renter Occupied HU 3,604 (44.9%)
Vacant Housing Units 480 ( 6.0%)
Median Home Value $290,307
Average Home Value $301,494


Total Households 7,552
Average Household Size 2.97
Family Households 5,321
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. 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 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.


2010-2017 2017-2022
Population 0.35% 0.39%
Households 0.19% 0.29%
Families 0.15% 0.27%
Median Household Income   2.82%
Per Capita Income   2.99%

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, 2017 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 Density # 44 92nd
Diversity Index # 16 97th
Median Household Income # 358 34th
Per Capita Income # 436 20th

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

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