12520 -- U.S. ZIP code Municipality (1990): CORNWALL ON HUDS, New York All ZIPs for this municipality (1990): 12520 Population (2000): 2918 Housing Units (2000): 1170 Land area (2000): 4.148980 sq. miles (10.745809 sq. km) Water area (2000): 0.015344 sq. miles (0.039741 sq. km) Total area (2000): 4.164324 sq. miles (10.785550 sq. km) Located within: New York (NY) Location: 41.442589 N, 74.013898 W