Stephenson County is located on the northern border of Illinois. This remarkable county was named after Benjamin Stephenson (1769-1822), representative of Illinois Territory in the United States Congress. The county seat of Stephenson County is Freeport. The county's area is 564 square miles. Established in 1837, today Stephenson County is home to 44 thousand Americans. This map shows the borders of Stephenson 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 Stephenson County.
The borders of Stephenson County over the map of Illinois
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