'Jefferson County, KY' definitions:

Jefferson -- U.S. County in Kentucky

From: Gazetteer 2000
Name :
Jefferson -- U.S. County in Kentucky
Population (2000) :
693604
Housing Units (2000) :
305835
Land area (2000) :
385.087715 sq. miles (997.372560 sq. km)
Water area (2000) :
13.487869 sq. miles (34.933418 sq. km)
Total area (2000) :
398.575584 sq. miles (1032.305978 sq. km)
Located within :
Kentucky (KY), FIPS 21
Location :
38.209237 N, 85.704021 W