The term "Cortlandt Manor" derives from the history of the 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. <Westchester County - A Pictorial History - page 20>.
Until 1991, this area shared a mailing address and ZIP Code (10566) with the city of Peekskill. Although it now has its own ZIP code, 10567, many directories and censuses still do not include Cortlandt Manor, because it is unincorporated section of the Town of Cortlandt. The 10567 zip code was created by the US Postal Service to differentiate this part of Corlandt town from Cortland, New York, which is located hours away in upstate NY.
Cortlandt Manor residents are served by Hendrick Hudson Central School District, Lakeland Central School District, and Putnam Valley Central School District. Two schools in Hendrick Hudson Central School District are located in Cortlandt Manor: Furnace Woods Elementary School and Blue Mountain Middle School, which are separated by several soccer fields. Two of the Lakeland Central School District schools are located in Cortlandt Manor: Van Cortlandtville Elementary School and Walter Panas High School.