'Jefferson County, OR' definitions:

Jefferson -- U.S. County in Oregon

From: Gazetteer 2000
Name :
Jefferson -- U.S. County in Oregon
Population (2000) :
19009
Housing Units (2000) :
8319
Land area (2000) :
1780.782935 sq. miles (4612.206431 sq. km)
Water area (2000) :
10.384820 sq. miles (26.896560 sq. km)
Total area (2000) :
1791.167755 sq. miles (4639.102991 sq. km)
Located within :
Oregon (OR), FIPS 41
Location :
44.579150 N, 121.235587 W