Seneca County on the map of Ohio 2025. Cities, roads, borders and directions in Seneca County of Ohio.

USA / Ohio / Seneca County

Seneca County is situated in the northern zone of Ohio. This wonderful county was named after Seneca Indians, who had a reservation in the county area at the time. The area of Seneca County is about 550.59 square miles. The county, created on Apr 1, 1820 from Huron County, and it is populated today by 55 thousand residents. Tiffin is the county seat of Seneca County. This map shows the borders of Seneca 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 Seneca County.

The borders of Seneca County over the map of Ohio

An image of Seneca County, OH

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