'Jackson County, IN' definitions:

Jackson -- U.S. County in Indiana

From: Gazetteer 2000
Name :
Jackson -- U.S. County in Indiana
Population (2000) :
41335
Housing Units (2000) :
17137
Land area (2000) :
509.314798 sq. miles (1319.119215 sq. km)
Water area (2000) :
4.438613 sq. miles (11.495954 sq. km)
Total area (2000) :
513.753411 sq. miles (1330.615169 sq. km)
Located within :
Indiana (IN), FIPS 18
Location :
38.917112 N, 85.979889 W