63370 -- U.S. ZIP code Municipality (1990): OLNEY, Missouri All ZIPs for this municipality (1990): 63370 Population (2000): 41 Housing Units (2000): 22 Land area (2000): 1.769328 sq. miles (4.582537 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.769328 sq. miles (4.582537 sq. km) Located within: Missouri (MO) Location: 39.085749 N, 91.224309 W