Cologne is an unincorporated community and census-designated place located within Galloway Township, in Atlantic County, in the U.S. state of New Jersey. Cologne is located on U.S. Route 30, about 2.5 miles southeast of Egg Harbor City. Cologne has a post office with ZIP Code 08213.It was first listed as a CDP in the 2020 census with a population was 1,461.