Harwich is a New England town on Cape Cod, in Barnstable County in the state of Massachusetts in the United States. At the 2010 census it had a population of 12,243. The town is a popular vacation spot, located near the Cape Cod National Seashore. Harwich's beaches are on the Nantucket Sound side of Cape Cod. Harwich has three active harbors. Saquatucket, Wychmere and Allen Harbors are all in Harwich Port. The town of Harwich includes the villages of Pleasant Lake, West Harwich, East Harwich, Harwich Port, Harwich Center, North Harwich and South Harwich.