12734 -- U.S. ZIP code Municipality (1990): GROSSINGER, New York All ZIPs for this municipality (1990): 12734 Population (2000): 837 Housing Units (2000): 522 Land area (2000): 12.803877 sq. miles (33.161888 sq. km) Water area (2000): 0.020421 sq. miles (0.052891 sq. km) Total area (2000): 12.824298 sq. miles (33.214779 sq. km) Located within: New York (NY) Location: 41.734913 N, 74.750139 W