Ridgebury is a census-designated place (CDP) in the town of Ridgefield, Fairfield County, Connecticut, United States. It occupies the north end of the town of Ridgefield and is bordered to the north and northeast by the city of Danbury and to the west by Putnam and Westchester counties in New York. As of the 2020 census, Ridgebury had a population of 2,223.