'Fayette County, IL' definitions:

Fayette -- U.S. County in Illinois

From: Gazetteer 2000
Name :
Fayette -- U.S. County in Illinois
Population (2000) :
21802
Housing Units (2000) :
9053
Land area (2000) :
716.487135 sq. miles (1855.693082 sq. km)
Water area (2000) :
8.870899 sq. miles (22.975523 sq. km)
Total area (2000) :
725.358034 sq. miles (1878.668605 sq. km)
Located within :
Illinois (IL), FIPS 17
Location :
39.000305 N, 88.990889 W