Saugatuck is a census-designated place in the town of Westport, Fairfield County, Connecticut, United States. It is in the southwest part of the town, on both sides of the Saugatuck River, extending south to where it enters Long Island Sound. North of Interstate 95, it occupies just the west side of the Saugatuck and continues north as far as U.S. Route 1. It is bordered to the north by Westport Village and to the west by the city of Norwalk.