Galion is a city in Crawford County in the U.S. state of Ohio. The population was 10,512 at the 2010 census. Galion is the second-largest city in Crawford County. The Crawford County portion of Galion is part of the Bucyrus Micropolitan Statistical Area. The small portion of the city that is located in Richland County is part of the Mansfield Metropolitan Statistical Area, while the portion extending into Morrow County is considered part of the Columbus Metropolitan Statistical Area.