63936 -- U.S. ZIP code Municipality (1990): DUDLEY, Missouri All ZIPs for this municipality (1990): 63936 Population (2000): 949 Housing Units (2000): 407 Land area (2000): 79.842478 sq. miles (206.791060 sq. km) Water area (2000): 0.060033 sq. miles (0.155486 sq. km) Total area (2000): 79.902511 sq. miles (206.946546 sq. km) Located within: Missouri (MO) Location: 36.808827 N, 90.129157 W