Popponesset Island, Massachusetts

Popponesset Island is a census-designated place (CDP) in the town of Mashpee in Barnstable County, Massachusetts, United States. The population was 26 at the 2010 census.GeographyPopponesset Island is located in the southeastern part of the town of Mashpee. It lies in Popponesset Bay, an arm of Nantucket Sound, and is separated from the mainland of Cape Cod by the narrow Popponesset Creek. The CDP of New Seabury is to the west, across Popponesset Creek, and the Popponesset CDP is to the southwest. The town of Barnstable is to the northeast, across Popponesset Bay.According to the United States Census Bureau, the Popponesset Island CDP has a total area of 1.0sqkm. 0.2sqkm of it is land, and 0.8sqkm of it (81.16%) is water.HistoryDuring World War II, Popponesset Island was used for amphibious assault training.DemographicsAs of the census of 2000, there were 39 people, 19 households, and 12 families residing in the CDP. The population density was 188.2/km² (502.1/mi²). There were 69 housing units at an average density of 333.0/km² (888.3/mi²). The racial makeup of the CDP was 100.00% White.