64443 -- U.S. ZIP code Municipality (1990): EASTON, Missouri All ZIPs for this municipality (1990): 64443 Population (2000): 1075 Housing Units (2000): 433 Land area (2000): 45.415730 sq. miles (117.626195 sq. km) Water area (2000): 0.036696 sq. miles (0.095041 sq. km) Total area (2000): 45.452426 sq. miles (117.721236 sq. km) Located within: Missouri (MO) Location: 39.742355 N, 94.652538 W