'Vermilion County, IL' definitions:

Vermilion -- U.S. County in Illinois

From: Gazetteer 2000
Name :
Vermilion -- U.S. County in Illinois
Population (2000) :
83919
Housing Units (2000) :
36349
Land area (2000) :
899.080050 sq. miles (2328.606541 sq. km)
Water area (2000) :
3.056357 sq. miles (7.915927 sq. km)
Total area (2000) :
902.136407 sq. miles (2336.522468 sq. km)
Located within :
Illinois (IL), FIPS 17
Location :
40.156797 N, 87.692434 W