Marlboro Psychiatric Hospital was a public hospital in Marlboro Township, Monmouth County, New Jersey, United States, which was operated by the State of New Jersey. Construction of the hospital began in 1929. It first opened in early 1931, with Dr. J.B. Gordon as medical director. According to the site plan, the hospital's campus was on 468 acres (189 ha). A perimeter fence completely enclosed the property. The land was mostly a rural environment. When it closed, the hospital was on 594 acres (240 ha), having enlarged the grounds over the years. It opened with a capacity to accommodate 500-800 patients. The grounds construction continued after opening and when completed, the hospital was expected to have a capacity of 2,000 patients. However, in 1995, the hospital served an average of 780