64486 -- U.S. ZIP code Municipality (1990): SHERIDAN, Missouri All ZIPs for this municipality (1990): 64486 Population (2000): 431 Housing Units (2000): 229 Land area (2000): 48.801068 sq. miles (126.394181 sq. km) Water area (2000): 0.101130 sq. miles (0.261925 sq. km) Total area (2000): 48.902198 sq. miles (126.656106 sq. km) Located within: Missouri (MO) Location: 40.530798 N, 94.624955 W