'Lee County, IL' definitions:

Lee -- U.S. County in Illinois

From: Gazetteer 2000
Name :
Lee -- U.S. County in Illinois
Population (2000) :
36062
Housing Units (2000) :
14310
Land area (2000) :
725.363845 sq. miles (1878.683655 sq. km)
Water area (2000) :
3.922337 sq. miles (10.158806 sq. km)
Total area (2000) :
729.286182 sq. miles (1888.842461 sq. km)
Located within :
Illinois (IL), FIPS 17
Location :
41.774245 N, 89.352013 W