Columbia, NJ Profile: Facts, Map & Data


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Columbia, New Jersey - Basic Facts

The Columbia Census Designated Place had a population of 214 as of July 1, 2017. 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, 2017.

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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, 2017)


Total Population 214
Daytime Population: Workers 68
Daytime Population: Residents 102
Total Daytime Population (TDP) 170
Ratio TDP/Total Population1 0.79
Population in Households 211
Population in Familes 189
Population in Group Qrtrs 3
Population Density2 2,146
Diversity Index3 17


Median Household Income $94,706
Average Household Income $117,042
Per Capita Income $41,385


Total Housing Units 85 (100%)
Owner Occupied HU 62 (72.9%)
Renter Occupied HU 10 (11.8%)
Vacant Housing Units 13 (15.3%)
Median Home Value $340,385
Average Home Value $360,317


Total Households 72
Average Household Size 2.93
Family Households 58
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 -0.93% -0.47%
Households -0.92% -0.56%
Families 0.74% -0.35%
Median Household Income   2.25%
Per Capita Income   3.18%

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, 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 # 522 4th
Population Density # 316 42nd
Diversity Index # 477 13th
Median Household Income # 169 69th
Per Capita Income # 217 60th

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

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