Greenvale is a hamlet in Nassau County, New York on the North Shore of Long Island. Located between Roslyn and Brookville, Greenvale is known as the Long Island Rail Road stop for the C.W. Post Campus of Long Island University and the New York Institute of Technology. The school is located to the east in Brookville, though using the Greenvale postal code. Until 1866 the community was originally known as “Cedar Swamp.”
Population: 1,094
Zip Code: 11548
Area Code: 516
Elevation: 187′