'McLean County, IL' definitions:

McLean -- U.S. County in Illinois

From: Gazetteer 2000
Name :
McLean -- U.S. County in Illinois
Population (2000) :
150433
Housing Units (2000) :
59972
Land area (2000) :
1183.527443 sq. miles (3065.321876 sq. km)
Water area (2000) :
2.758138 sq. miles (7.143544 sq. km)
Total area (2000) :
1186.285581 sq. miles (3072.465420 sq. km)
Located within :
Illinois (IL), FIPS 17
Location :
40.495251 N, 88.883582 W