Pleasant Valley, Mercer County, New Jersey

Pleasant Valley is an unincorporated community located within Hopewell Township in Mercer County, in the U.S. state of New Jersey. The Howell Living History Farm, also known as the Joseph Phillips Farm, is located in the community.

History
The community is located along the northern edge of a 30000 acre plot bought by the governor of West Jersey, Daniel Coxe, in 1685. Joseph Phillips started his farm in 1732, and sold 125 acres to blacksmith John Phillips in 1737.

Historic district
The Pleasant Valley Historic District is a 1565 acre historic district located along Pleasant Valley Road, Valley Road, Woodens Lane and Hunter Road in the community, and extending into West Amwell Township in Hunterdon County. The district was added to the National Register of Historic Places on June 14, 1991, for its significance in agriculture, architecture, and exploration/settlement. It includes 52 contributing buildings, 7 contributing structures, and 22 contributing sites. The individually listed Howell Living History Farm is central to the district.