61049 -- U.S. ZIP code Municipality (1990): LINDENWOOD, Illinois All ZIPs for this municipality (1990): 61049 Population (2000): 505 Housing Units (2000): 195 Land area (2000): 17.773453 sq. miles (46.033030 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 17.773453 sq. miles (46.033030 sq. km) Located within: Illinois (IL) Location: 42.054546 N, 89.024568 W