Gallia County, county in Ohio, United States. As of 2020 county had an estimated population of 29,802 inhabitants. The county was created 221 years ago in 1803. Its county seat is Gallipolis.
There are 0 city/town in Gallia County, OH.
List of cities, towns, neighborhoods & other populated places in Gallia County.
City Name | Title | Population |
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