64426 -- U.S. ZIP code Municipality (1990): BLYTHEDALE, Missouri All ZIPs for this municipality (1990): 64426 Population (2000): 419 Housing Units (2000): 203 Land area (2000): 56.529897 sq. miles (146.411754 sq. km) Water area (2000): 0.022751 sq. miles (0.058924 sq. km) Total area (2000): 56.552648 sq. miles (146.470678 sq. km) Located within: Missouri (MO) Location: 40.528127 N, 93.874307 W