12423 -- U.S. ZIP code Municipality (1990): EAST DURHAM, New York All ZIPs for this municipality (1990): 12423 Population (2000): 1041 Housing Units (2000): 676 Land area (2000): 13.691452 sq. miles (35.460697 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 13.691452 sq. miles (35.460697 sq. km) Located within: New York (NY) Location: 42.378679 N, 74.104432 W