'Jefferson County, NE' definitions:

Jefferson -- U.S. County in Nebraska

From: Gazetteer 2000
Name :
Jefferson -- U.S. County in Nebraska
Population (2000) :
8333
Housing Units (2000) :
3942
Land area (2000) :
573.014992 sq. miles (1484.101954 sq. km)
Water area (2000) :
2.480699 sq. miles (6.424980 sq. km)
Total area (2000) :
575.495691 sq. miles (1490.526934 sq. km)
Located within :
Nebraska (NE), FIPS 31
Location :
40.162013 N, 97.145107 W