'Winnebago County, IL' definitions:
Winnebago -- U.S. County in Illinois
From: Gazetteer 2000
Name :
Winnebago -- U.S. County in Illinois
Population (2000) :
278418
Housing Units (2000) :
114404
Land area (2000) :
513.736898 sq. miles (1330.572400 sq. km)
Water area (2000) :
5.537001 sq. miles (14.340767 sq. km)
Total area (2000) :
519.273899 sq. miles (1344.913167 sq. km)
Located within :
Illinois (IL), FIPS 17
Location :
42.311119 N, 89.081630 W