Middletown was a town in Richmond County, New York. It was incorporated in 1860 from parts of Southfield and Castleton. At the time, it included the most populous part of the village of Edgewater and the hilly ridges of the interior, Grymes Hill and Todt Hill among others.
- Author: Anonymous, Illustrated sketch book of Staten Island, NY: Its industries and commerce, New York 1886 page 95.
- Franklin B. Hough (1872), "Richmond County", Gazetteer of the State of New York, Albany, N.Y: Andrew Boyd, OCLC 18450990
- Hartman, Barry. "An Island Within a Cty". A Walk Around Staten Island. WNET 13. Retrieved 23 September 2013.