Cortlandt Manor is a hamlet located in the Town of Cortlandt in northern Westchester County, New York. Cortlandt Manor is situated directly east, north and south of Peekskill, and east of three sections of the Town of Cortlandt, Croton-on-Hudson, Crugers, and Montrose. Most of the area is made up of residential homes. Cortlandt Manor also encompasses Cortlandt Estates.The term "Cortlandt Manor" derives from the history of Westchester County. Until the Revolutionary War, Westchester County was split into 6 manors one of which was "Cortlandt Manoor" shown on a map circa 1760 where "Cortlandt Manor" extended from the Hudson River to Connecticut.