63071 -- U.S. ZIP code Municipality (1990): RICHWOODS, Missouri All ZIPs for this municipality (1990): 63071 Population (2000): 1063 Housing Units (2000): 493 Land area (2000): 63.098379 sq. miles (163.424044 sq. km) Water area (2000): 0.280171 sq. miles (0.725639 sq. km) Total area (2000): 63.378550 sq. miles (164.149683 sq. km) Located within: Missouri (MO) Location: 38.137345 N, 90.831681 W