Georgetown is a town in Sagadahoc County, Maine, United States. The population was 1,058 at the 2020 census. Home to Reid State Park, the town is part of the Portland–South Portland–Biddeford, Maine Metropolitan Statistical Area. Located on an island accessible by car from the mainland, Georgetown includes the villages of Five Islands, Georgetown, Bay Point, Marrtown, West Georgetown and Robinhood. It is a popular tourist destination.

Sagadahoc County is a county located in the U.S. state of Maine. As of the 2020 census, the population was 36,699. Its county seat is Bath. In geographic area, it is the smallest county in Maine.