Port Colden is an unincorporated community and census-designated place located within Washington Township, in Warren County, in the U.S. state of New Jersey, that was created as part of the 2010 United States Census. As of the 2010 Census, the CDP's population was 122.The community was named for its location on the Morris Canal and after Cadwallader D. Colden, president of the Morris Canal Company.