About Dennis, Massachusetts
Coordinates: 41°44?07?N 70°11?40?W? / ?41.73528°N 70.19444°W? / 41.73528; -70.19444Coordinates: 41°44?07?N 70°11?40?W? / ?41.73528°N 70.19444°W? / 41.73528; -70.1944422.2 sq mi (57.6 km2)20.6 sq mi (53.4 km2)1.6 sq mi (4.2 km2) ? Density 690.0/sq mi (266.0/km2)www.town.dennis.ma.usDennis /?d?n?s/ is a town in Barnstable County, Massachusetts, United States; located near the center of Cape Cod. The population was 14,207 at the 2010 census.The town encompasses five distinct villages, each of which has its own post office. These constituent villages are Dennis (including North Dennis), Dennis Port, East Dennis, South Dennis, and West Dennis.