Pleasant Valley, Mercer County, New Jersey
Pleasant Valley is an unincorporated community located within Hopewell Township in Mercer County, New Jersey. Historic district. The Pleasant Valley Historic District is a historic district along Pleasant Valley Road, Valley Road, Woodens Lane and Hunter Road in Pleasant Valley, Mercer County, New Jersey, extending into West Amwell Township, Hunterdon County. The district was added to the National Register of Historic Places on June 14, 1991 for its significance in agriculture and architecture.