East Rocky Hill CDP, NJ Profile: Facts, Map & Data


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East Rocky Hill CDP, New Jersey - Basic Facts

The East Rocky Hill Census Designated Place had a population of 507 as of July 1, 2016. East Rocky Hill CDP ranks in the lower quartile for Population Density and the upper quartile for 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 East Rocky Hill CDP is located at latitude 40.4152 and longitude -74.618 in Somerset County. The formal boundaries for the East Rocky Hill Census Designated Place (see map below) encompass a land area of 4.16 sq. miles and a water area of 0.09 sq. miles.

The East Rocky Hill Census Designated Place (GNIS ID: 2583986) has a U2 Census Class Code which indicates a census designated place without an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The East Rocky Hill Census Designated Place is located within Township of Franklin, a minor civil division (MCD) of Somerset County.

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

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East Rocky Hill Census Designated Place, NJ Boundary Map

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East Rocky Hill CDP, NJ Data & Demographics (As of July 1, 2016)


Total Population 507
Population in Households 506
Population in Familes 453
Population in Group Qrtrs 1
Population Density1 122
Diversity Index2 70


Total Households 168
Average Household Size 3.01
Family Households 134
Average Family Size 3


Total Housing Units 180 (100%)
Owner Occupied HU 146 (81.1%)
Renter Occupied HU 22 (12.2%)
Vacant Housing Units 12 ( 6.7%)
Median Home Value $571,429
Average Home Value $573,801


Median Household Income $122,474
Average Household Income $195,581
Per Capita Income $64,191
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 1.25% 1.04%
Households 0.78% 0.93%
Families 2.48% 0.74%
Median Household Income   2.78%
Per Capita Income   1.81%
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.

East Rocky Hill CDP, NJ - Peer Comparisons by Rank and Percentile

The table below compares East Rocky Hill CDP 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 # 498 9th
Population Density1 # 536 2nd
Diversity Index2 # 92 83rd
Median Household Income # 56 90th
Per Capita Income # 57 90th

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

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