11579 -- U.S. ZIP code Municipality (1990): SEA CLIFF, New York All ZIPs for this municipality (1990): 11579 Population (2000): 5141 Housing Units (2000): 2110 Land area (2000): 1.096281 sq. miles (2.839355 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.096281 sq. miles (2.839355 sq. km) Located within: New York (NY) Location: 40.846388 N, 73.644526 W