'Tazewell County, IL' definitions:

Tazewell -- U.S. County in Illinois

From: Gazetteer 2000
Name :
Tazewell -- U.S. County in Illinois
Population (2000) :
128485
Housing Units (2000) :
52973
Land area (2000) :
648.860160 sq. miles (1680.540029 sq. km)
Water area (2000) :
9.032295 sq. miles (23.393536 sq. km)
Total area (2000) :
657.892455 sq. miles (1703.933565 sq. km)
Located within :
Illinois (IL), FIPS 17
Location :
40.557333 N, 89.540657 W