12751 -- U.S. ZIP code Municipality (1990): KIAMESHA LAKE, New York All ZIPs for this municipality (1990): 12751 Population (2000): 387 Housing Units (2000): 368 Land area (2000): 1.836031 sq. miles (4.755297 sq. km) Water area (2000): 0.241200 sq. miles (0.624705 sq. km) Total area (2000): 2.077231 sq. miles (5.380002 sq. km) Located within: New York (NY) Location: 41.679152 N, 74.657000 W