The Salem Historic District encompasses the historic 19th-century town center of Salem, Connecticut. It extends along Connecticut Route 85 roughly from Round Hill Road to Music Vale Road, and includes the rural town's major civic and institutional buildings, as well as a number of surrounding residences. The area was developed after the town was incorporated in 1819, and was mostly built out by 1885. The district was listed on the National Register of Historic Places in 1980.