Ridgebury is a census-designated place 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. The name is a portmanteau of Ridgefield and Danbury. All political power in Ridgebury is currently held by the government of Ridgefield. Ridgebury was first listed as a CDP prior to the 2020 census.