Of Plymouth’s 103-square-mile land area, 44% is located within the Buzzards Bay watershed. The Agawam River begins in Plymouth and flows through Wareham to Buzzards Bay. Carver sits on Plymouth’s western edge, where the Wankinco River snakes along the town line. At its southernmost extreme, Plymouth’s border nearly reaches the shores of Buttermilk Bay in Bourne. As of the 2010 Census, Plymouth was home to 56,468 residents.