62539 -- U.S. ZIP code Municipality (1990): ILLIOPOLIS, Illinois All ZIPs for this municipality (1990): 62539 Population (2000): 1367 Housing Units (2000): 568 Land area (2000): 44.973256 sq. miles (116.480193 sq. km) Water area (2000): 0.005408 sq. miles (0.014007 sq. km) Total area (2000): 44.978664 sq. miles (116.494200 sq. km) Located within: Illinois (IL) Location: 39.855984 N, 89.248709 W