Green Knoll, NJ Profile: Facts, Map & Data


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Green Knoll, New Jersey - Basic Facts

The Green Knoll Census Designated Place had a population of 6,295 as of July 1, 2017.

The primary coordinate point for Green Knoll is located at latitude 40.6047 and longitude -74.6145 in Somerset County. The formal boundaries for the Green Knoll Census Designated Place (see map below) encompass a land area of 4.71 sq. miles and a water area of 0 sq. miles. Somerset County is in the Eastern time zone (GMT -5). The elevation is 151 feet.

The Green Knoll Census Designated Place (GNIS ID: 2583993) 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 Green Knoll Census Designated Place is located within Township of Bridgewater, a minor civil division (MCD) of Somerset County.

Beneath the boundary map are tables with Green Knoll 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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Green Knoll Census Designated Place, NJ Boundary Map

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Boundary Maps: Township of Bridgewater | Somerset County | New Jersey Counties

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


Total Population 6,295
Daytime Population: Workers 9,889
Daytime Population: Residents 3,068
Total Daytime Population (TDP) 12,957
Ratio TDP/Total Population1 2.06
Population in Households 6,164
Population in Familes 5,300
Population in Group Qrtrs 131
Population Density2 1,337
Diversity Index3 50


Median Household Income $110,933
Average Household Income $143,751
Per Capita Income $56,174


Total Housing Units 2,555 (100%)
Owner Occupied HU 1,868 (73.1%)
Renter Occupied HU 581 (22.7%)
Vacant Housing Units 106 ( 4.1%)
Median Home Value $468,820
Average Home Value $509,733


Total Households 2,449
Average Household Size 2.52
Family Households 1,700
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 0.21% 0.27%
Households 0.05% 0.17%
Families 0.59% 0.13%
Median Household Income   1.84%
Per Capita Income   2.09%

Green Knoll, NJ - Peer Comparisons by Rank and Percentile

The table below compares Green Knoll 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 # 223 59th
Population Density # 394 28th
Diversity Index # 226 59th
Median Household Income # 105 81st
Per Capita Income # 92 83rd

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

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