Columbia, New Jersey

Columbia is an unincorporated community and census-designated place (CDP) located within Knowlton Township in Warren County, in the U.S. state of New Jersey. While the community has existed for over a century, the CDP was created as part of the 2010 United States Census. As of the 2010 Census, the CDP's population was 229. The area is served as United States Postal Service ZIP Code 07832.

History
In 1909, Jersey Central Power and Light built the hydroelectric Columbia Lake Dam on the Paulins Kill, forming Columbia Lake. It was removed in 2018 to provide safe fish passage and improve the river and stream habitat.

Geography
According to the United States Census Bureau, the CDP had a total area of 0.126 square miles (0.327 km2), including 0.100 square miles (0.258 km2) of land and 0.026 square miles (0.068 km2) of water (20.94%).

2010 census
The 2010 United States census counted 229 people, 77 households, and 55 families in the CDP. The population density was 2297.4 /sqmi. There were 85 housing units at an average density of 852.8 /sqmi. The racial makeup was 96.94% (222) White, 3.06% (7) Black or African American, 0.00% (0) Native American, 0.00% (0) Asian, 0.00% (0) Pacific Islander, 0.00% (0) from other races, and 0.00% (0) from two or more races. Hispanic or Latino of any race were 2.18% (5) of the population.

Of the 77 households, 29.9% had children under the age of 18; 50.6% were married couples living together; 18.2% had a female householder with no husband present and 28.6% were non-families. Of all households, 22.1% were made up of individuals and 6.5% had someone living alone who was 65 years of age or older. The average household size was 2.60 and the average family size was 3.00.

19.2% of the population were under the age of 18, 12.2% from 18 to 24, 17.5% from 25 to 44, 32.3% from 45 to 64, and 18.8% who were 65 years of age or older. The median age was 45.4 years. For every 100 females, the population had 90.8 males. For every 100 females ages 18 and older there were 74.5 males.

Wineries

 * Brook Hollow Winery