Plainfield, NJ Profile: Facts, Map & Data


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Plainfield, New Jersey - Basic Facts

The City of Plainfield had a population of 51,827 as of July 1, 2016. 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 Plainfield is located at latitude 40.6154 and longitude -74.4158 in Union County. The formal boundaries for the City of Plainfield (see map below) encompass a land area of 6.02 sq. miles and a water area of 0.01 sq. miles. Union County is in the Eastern time zone (GMT -5). The elevation is 118 feet.

The City of Plainfield (GNIS ID: 885355) 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 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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City of Plainfield, NJ Boundary Map

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


Total Population 51,827
Population in Households 51,095
Population in Familes 40,701
Population in Group Qrtrs 732
Population Density1 8,605
Diversity Index2 86


Total Households 15,537
Average Household Size 3.29
Family Households 11,126
Average Family Size 4


Total Housing Units 17,172 (100%)
Owner Occupied HU 7,231 (42.1%)
Renter Occupied HU 8,306 (48.4%)
Vacant Housing Units 1,635 ( 9.5%)
Median Home Value $265,161
Average Home Value $293,274


Median Household Income $49,041
Average Household Income $71,503
Per Capita Income $21,965
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.64% 0.8%
Households 0.37% 0.64%
Families 0.36% 0.64%
Median Household Income   -1.35%
Per Capita Income   0.9%
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.

Plainfield, NJ - Peer Comparisons by Rank and Percentile

The table below compares 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 # 19 97th
Population Density1 # 39 93rd
Diversity Index2 # 14 98th
Median Household Income # 479 12th
Per Capita Income # 512 6th

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