Allaire State Park is a park located in Howell Township and in Wall Township in Monmouth County, New Jersey, United States, near the borough of Farmingdale, operated and maintained by the New Jersey Division of Parks and Forestry and is part of the New Jersey Coastal Heritage Trail Route. The park is known for its restored 19th century ironworks, Allaire Village, on the park premises. It is named after James P. Allaire, founder of the Howell Works at the same site.