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Jefferson County, Oregon

US county information
NameJefferson County
US Area
Total Area1791 sq mi (4638.7 km2)
Land Area1781 sq mi (4612.8 km2)
Water Area10 sq mi (25.9 km2)
Population21720 (2010)
Density4.7/km2 (12.2/sq mi)
FoundedDecember 12, 1914

     Home | County | Jefferson County Oregon

Jefferson County is a county located in the U.S. state of Oregon. In 2010, its population was 21,720. It is named after Mount Jefferson. The seat of the county is Madras.

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