62859 -- U.S. ZIP code Municipality (1990): MC LEANSBORO, Illinois All ZIPs for this municipality (1990): 62859 Population (2000): 5630 Housing Units (2000): 2628 Land area (2000): 184.356480 sq. miles (477.481071 sq. km) Water area (2000): 0.504015 sq. miles (1.305394 sq. km) Total area (2000): 184.860495 sq. miles (478.786465 sq. km) Located within: Illinois (IL) Location: 38.090004 N, 88.534316 W