Popponesset Island, MA

Popponesset Island is an island and census-designated place in Mashpee in Barnstable County, Massachusetts, United States. The 2020 census counted 45 residents. During World War II, Popponesset Island was used for amphibious assault training. Popponesset Island is located in the southeastern part of Mashpee. That mix gives Popponesset Island a clear local shape within Massachusetts, with older layers still visible in current places. The local scoop is a place whose streets, landmarks, and institutions keep its earlier story close to the present. Popponesset Island lies in Popponesset Bay, an arm of Nantucket Sound, and is separated from the mainland of Cape Cod by the narrow Popponesset Creek.