Columbia, NJ Profile: Facts, Map & Data


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Columbia, New Jersey - Basic Facts

The Columbia Census Designated Place had a population of 217 as of July 1, 2015. Columbia ranks in the lower 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 Columbia is located at latitude 40.9259 and longitude -75.0941 in Warren County. The formal boundaries for the Columbia Census Designated Place (see map below) encompass a land area of 0.1 sq. miles and a water area of 0.03 sq. miles. Warren County is in the Eastern time zone (GMT -5). The elevation is 308 feet.

The Columbia Census Designated Place (GNIS ID: 2583981) 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 Columbia Census Designated Place is located within Township of Knowlton, a minor civil division (MCD) of Warren County.

Beneath the boundary map are tables with Columbia population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2015.

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


Columbia Census Designated Place, NJ Boundary Map

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Boundary Maps: Township of Knowlton | Warren County | New Jersey Counties

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Columbia, NJ Data & Demographics (As of July 1, 2015)


Total Population 217
Population in Households 213
Population in Familes 191
Population in Group Qrtrs 4
Population Density1 2,177
Diversity Index2 15


Total Households 73
Average Household Size 2.92
Family Households 59
Average Family Size 3


Total Housing Units 85 (100%)
Owner Occupied HU 64 (75.3%)
Renter Occupied HU 10 (11.8%)
Vacant Housing Units 12 (14.1%)
Median Home Value $257,143
Average Home Value $276,172


Median Household Income $92,200
Average Household Income $100,168
Per Capita Income $35,151
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -1.02% -0.65%
Households -1.01% -0.55%
Families 1.35% -0.34%
Median Household Income   1.26%
Per Capita Income   2.37%
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.


Columbia, NJ - Peer Comparisons by Rank and Percentile

The table below compares Columbia to the other 545 incorporated cities, towns and CDPs in New Jersey by rank and percentile using July 1, 2015 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 # 522 4th
Population Density1 # 310 43rd
Diversity Index2 # 478 12th
Median Household Income # 162 70th
Per Capita Income # 299 45th

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