Jefferson County on the map of Oregon 2024. Cities, roads, borders and directions in Jefferson County of Oregon.

Jefferson County is situated in the central area of Oregon. This interesting county is named after Mount Jefferson, located on its western boundary, which was named for Thomas Jefferson. The county seat of Jefferson County is Madras. The county's area is about 1,781 square miles. Founded in 1914, today Jefferson County is home to 25 thousand residents. This map shows the borders of Jefferson County as well as neighboring counties, including major highways and natural objecsts as of 2024. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Jefferson County.