Madison Park is an unincorporated community and census-designated place in Old Bridge Township, Middlesex County, New Jersey, United States. As of the 2020 census, the CDP's population was 8,050, up from 7,144 in 2010. The name "Madison Park" comes from Madison Township, the original name for Old Bridge Township from 1869 until 1975. Madison Park is the name of a residential development constructed in 1955–1956 by Herbert J. Kendall. The original development is located west of U.S. Route 9 and is bounded by Bordentown Avenue, Cheesequake Road, and Ernston Road.