12189 -- U.S. ZIP code Municipality (1990): WATERVLIET, New York All ZIPs for this municipality (1990): 12189 Population (2000): 16783 Housing Units (2000): 8460 Land area (2000): 7.060208 sq. miles (18.285854 sq. km) Water area (2000): 0.007199 sq. miles (0.018646 sq. km) Total area (2000): 7.067407 sq. miles (18.304500 sq. km) Located within: New York (NY) Location: 42.729278 N, 73.709133 W