Columbia

County:: Warren County
County Seat:: No
Area (mi²):: 0.1
State:: New Jersey

Columbia is a CDP located in Warren County, New Jersey. Columbia has a 2025 population of 204. Columbia is currently declining at a rate of -0.97% annually but its population has increased by 42.66% since the most recent census, which recorded a population of 143 in 2020.

The average household income in Columbia is $92,851 with a poverty rate of 13.39%. The median age in Columbia is 55.6 years: 56 years for males, and 55.1 years for females.

Demographics

The racial composition of Columbia includes 96.05% White, 3.95% other race, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, Two or more races and multiracial populations.

Population by Race

White

Other race

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Two or more races

Race	Population	Percentage (of total)
White	146	96.05%
Other race	6	3.95%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Two or more races	0	0%

Columbia Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Columbia's average per capita income is $51,538. Household income levels show a median of $84,531. The poverty rate stands at 13.39%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Households	$84,531	$92,851
Families	$67,500	$81,538
Married Families	$51,786	-
Non Families	-	-

$51,538

Average Income

$84,531

Median Household Income

13.39%

Poverty Rate