'Madison County, FL' definitions:

Madison -- U.S. County in Florida

From: Gazetteer 2000
Name :
Madison -- U.S. County in Florida
Population (2000) :
18733
Housing Units (2000) :
7836
Land area (2000) :
691.794930 sq. miles (1791.740566 sq. km)
Water area (2000) :
24.004687 sq. miles (62.171851 sq. km)
Total area (2000) :
715.799617 sq. miles (1853.912417 sq. km)
Located within :
Florida (FL), FIPS 12
Location :
30.443902 N, 83.425800 W