'Jefferson County, NY' definitions:

Jefferson -- U.S. County in New York

From: Gazetteer 2000
Name :
Jefferson -- U.S. County in New York
Population (2000) :
111738
Housing Units (2000) :
54070
Land area (2000) :
1272.201758 sq. miles (3294.987287 sq. km)
Water area (2000) :
584.876374 sq. miles (1514.822790 sq. km)
Total area (2000) :
1857.078132 sq. miles (4809.810077 sq. km)
Located within :
New York (NY), FIPS 36
Location :
44.038673 N, 75.944575 W