'Madison County, IN' definitions:

Madison -- U.S. County in Indiana

From: Gazetteer 2000
Name :
Madison -- U.S. County in Indiana
Population (2000) :
133358
Housing Units (2000) :
56939
Land area (2000) :
452.129866 sq. miles (1171.010928 sq. km)
Water area (2000) :
0.780821 sq. miles (2.022316 sq. km)
Total area (2000) :
452.910687 sq. miles (1173.033244 sq. km)
Located within :
Indiana (IN), FIPS 18
Location :
40.145940 N, 85.719201 W