Allaire State Park is a park located in Howell and Wall Township in Monmouth County, New Jersey. Its signature feature is the Allaire Village, which used to be a prosperous industrial town producing pig iron and cast iron from the surrounding bog iron deposits. The park is named for James P. Allaire, founder of the Howell Works at the same site. The park was established in 1940, and it has 3,205 acres of land.