Jefferson County on the map of Kansas 2025. Cities, roads, borders and directions in Jefferson County of Kansas.

USA / Kansas / Jefferson County

Jefferson County is found in the northeastern part of Kansas. This prominent county is named after Thomas Jefferson, third U.S. President and founding father. The population of Jefferson County reaches 18 thousand people. The county, formed in 1855, covers an area of 536 square miles. The county seat of Jefferson County is Oskaloosa. This map shows the borders of Jefferson County as well as neighboring counties, including major highways and natural objecsts as of 2025. 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.



The borders of Jefferson County over the map of Kansas

An image of Jefferson County, KS

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