12435 -- U.S. ZIP code Municipality (1990): GREENFIELD PARK, New York All ZIPs for this municipality (1990): 12435 Population (2000): 261 Housing Units (2000): 134 Land area (2000): 7.803114 sq. miles (20.209972 sq. km) Water area (2000): 0.026640 sq. miles (0.068998 sq. km) Total area (2000): 7.829754 sq. miles (20.278970 sq. km) Located within: New York (NY) Location: 41.725808 N, 74.521064 W