Gallia County, Ohio

Gallia County
Courthouse in Gallipolis
Location within the U.S. state of Ohio
Ohio's location within the U.S.
Coordinates: 38°50′N 82°19′W / 38.83°N 82.32°W / 38.83; -82.32
Country United States
State Ohio
FoundedMarch 25, 1803
Named afterthe Latin name for France
SeatGallipolis
Largest villageGallipolis
Area
  Total
471 sq mi (1,220 km2)
  Land467 sq mi (1,210 km2)
  Water4.7 sq mi (12 km2)  1.0%
Population
 (2020)
  Total
29,220
  Estimate 
(2024)
28,886
  Density62/sq mi (24/km2)
Time zoneUTC−5 (Eastern)
  Summer (DST)UTC−4 (EDT)
Congressional district2nd
Websitewww.gallianet.net

Gallia County (/ˈɡæliə/) is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 29,220. Its county seat and largest village is Gallipolis.

Named after the French people who originally settled there, its name “Gallia” is the Latin word for Gaul, the ancient region of Western Europe that included present day France. Gallia County is part of the Point Pleasant, WV-OH Micropolitan Statistical Area.