Plainfield, NJ Profile: Facts, Map & Data


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Plainfield, New Jersey - Basic Facts

The City of Plainfield had a population of 52,292 as of July 1, 2017. 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, 2017.

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City of Plainfield, NJ Boundary Map

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


Total Population 52,292
Daytime Population: Workers 14,378
Daytime Population: Residents 26,537
Total Daytime Population (TDP) 40,915
Ratio TDP/Total Population1 0.78
Population in Households 51,559
Population in Familes 41,159
Population in Group Qrtrs 733
Population Density2 8,683
Diversity Index3 86


Median Household Income $48,745
Average Household Income $73,039
Per Capita Income $22,382


Total Housing Units 17,247 (100%)
Owner Occupied HU 7,207 (41.8%)
Renter Occupied HU 8,441 (48.9%)
Vacant Housing Units 1,599 ( 9.3%)
Median Home Value $274,956
Average Home Value $302,058


Total Households 15,648
Average Household Size 3.29
Family Households 11,209
Average Family Size 4
  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 0.67% 0.64%
Households 0.42% 0.5%
Families 0.42% 0.5%
Median Household Income   1.55%
Per Capita Income   2.54%

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, 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 # 19 97th
Population Density # 38 93rd
Diversity Index # 15 97th
Median Household Income # 482 12th
Per Capita Income # 511 6th

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

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