63137 -- U.S. ZIP code Municipality (1990): NORTH COUNTY, Missouri All ZIPs for this municipality (1990): 63137 63138 Population (2000): 21217 Housing Units (2000): 8763 Land area (2000): 7.418668 sq. miles (19.214262 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 7.418668 sq. miles (19.214262 sq. km) Located within: Missouri (MO) Location: 38.748183 N, 90.218649 W