Gallia County on the map of Ohio 2024. Cities, roads, borders and directions in Gallia County of Ohio.

Gallia County is situated on the southern border of Ohio. This well known county is named in honor of Gaul, the ancient name of France. The area of Gallia County is about 468.78 square miles. The county, formed on Apr 30, 1803 from Washington and Adams Counties, and it is populated today by 29 thousand residents. Gallipolis is the county seat of Gallia County. This map shows the borders of Gallia 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 Gallia County.