Gallia County, county in Ohio, United States. As of 2020 county had an estimated population of 29,802 inhabitants. The county was created 218 years ago in 1803. Its county seat is "Gallipolis".
There are 10 city/town in Gallia County, OH. The largest city of Gallia County is Porter with a population of 9,135. Other cities include, Swan Creek population 8,398, Gallipolis population 3,545, Addison population 2,124, Rio Grande population 777
Cities, Towns, Neighborhoods & Other Populated Places in Gallia County.
|Adamsville||Human settlement in Ohio, United States of America||Gallia||124|
|Addison||Township in Gallia County, Ohio||Gallia||2,124|
|Cheshire||Village in Gallia County, Ohio||Gallia||127|
|Crown City||Human settlement in Gallia County, Ohio, United States of America||Gallia||399|
|Gallipolis||Town in Ohio||Gallia||3,545|
|Porter||Township of Ohio||Gallia||9,135|
|Rio Grande||Village in Gallia County, Ohio, United States||Gallia||777|
|Spring Valley||Human settlement in Greene County, Ohio, United States of America||Gallia||500|
|Swan Creek||Township in Fulton County, Ohio||Gallia||8,398|
|Vinton||Village in Ohio||Gallia||528|