11954 -- U.S. ZIP code Municipality (1990): MONTAUK, New York All ZIPs for this municipality (1990): 11954 Population (2000): 3851 Housing Units (2000): 4815 Land area (2000): 17.523441 sq. miles (45.385502 sq. km) Water area (2000): 0.585106 sq. miles (1.515417 sq. km) Total area (2000): 18.108547 sq. miles (46.900919 sq. km) Located within: New York (NY) Location: 41.038310 N, 71.950608 W