The Plymouth Historic District encompasses a cluster of five civic buildings and the town common of Plymouth, New Hampshire. The 2acre district includes the town hall/court house, the Pemigewasset National Bank building, and the US Post Office building, as well as the Old Grafton County Courthouse . The Plymouth Congregation Church also falls within the district bounds, but is not considered contributing. The buildings are arrayed on the west side of Plymouth's town common, an oval grassy area flanked by one-way sections of Main Street.The district was listed on the National Register of Historic Places in 1986.
