13620 -- U.S. ZIP code Municipality (1990): CASTORLAND, New York All ZIPs for this municipality (1990): 13620 Population (2000): 2499 Housing Units (2000): 985 Land area (2000): 49.202428 sq. miles (127.433697 sq. km) Water area (2000): 0.020306 sq. miles (0.052593 sq. km) Total area (2000): 49.222734 sq. miles (127.486290 sq. km) Located within: New York (NY) Location: 43.907070 N, 75.447610 W