64455 -- U.S. ZIP code Municipality (1990): GRAHAM, Missouri All ZIPs for this municipality (1990): 64455 Population (2000): 459 Housing Units (2000): 210 Land area (2000): 55.252817 sq. miles (143.104132 sq. km) Water area (2000): 0.061633 sq. miles (0.159628 sq. km) Total area (2000): 55.314450 sq. miles (143.263760 sq. km) Located within: Missouri (MO) Location: 40.187914 N, 95.021429 W