63637 -- U.S. ZIP code Municipality (1990): DOE RUN, Missouri All ZIPs for this municipality (1990): 63637 Population (2000): 807 Housing Units (2000): 344 Land area (2000): 12.033475 sq. miles (31.166556 sq. km) Water area (2000): 0.032017 sq. miles (0.082923 sq. km) Total area (2000): 12.065492 sq. miles (31.249479 sq. km) Located within: Missouri (MO) Location: 37.734110 N, 90.514284 W