64471 -- U.S. ZIP code Municipality (1990): NEW HAMPTON, Missouri All ZIPs for this municipality (1990): 64471 Population (2000): 559 Housing Units (2000): 279 Land area (2000): 46.175419 sq. miles (119.593781 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 46.175419 sq. miles (119.593781 sq. km) Located within: Missouri (MO) Location: 40.264749 N, 94.195876 W