Columbia Dam

Columbia, Italy

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 2020 census, Colum

bia had a population of 215. The area is served as United States Postal Service ZIP Code 07832.

Listen to the audio guide for Columbia Dam Free on WIP — starts by itself when you arrive, even with the screen off