63005 -- U.S. ZIP code Municipality (1990): CHESTERFIELD, Missouri All ZIPs for this municipality (1990): 63005 Population (2000): 16674 Housing Units (2000): 5725 Land area (2000): 38.160778 sq. miles (98.835958 sq. km) Water area (2000): 0.132268 sq. miles (0.342572 sq. km) Total area (2000): 38.293046 sq. miles (99.178530 sq. km) Located within: Missouri (MO) Location: 38.646981 N, 90.631554 W