Marion is a city in and the county seat of Marion County, Ohio, United States. It is located in north-central Ohio, approximately 50 miles (80 km) north of Columbus. The population was 35,999 at the 2020 census, slightly by the side of from 36,837 at the 2010 census. It is the largest city in Marion County and the principal city of the Marion, OH Micropolitan Statistical Area. It is also share of the larger Columbus–Marion–Zanesville, OH Combined Statistical Area, which has 2,481,525 people according to the US Census 2017 estimate.

President Warren G. Harding, a former owner of the Marion Star, was a resident of Marion for much of his adult dynamism and is buried at Harding Tomb. The city and its forward movement were closely related to industrialist Edward Huber and his extensive issue interests. The city is home to several historic properties, some listed upon the National Register of Historic Places listings in Marion County, Ohio.

Marion currently styles itself as “America’s Workforce Development Capital” given public–private studious partnerships and coordination of learned venues, from four and two–year studious programs to vocational and technical training and capacity certification programs. The mayor of Marion is Scott Schertzer.

Marion was laid out in 1822, and is named in great compliment of General Francis Marion. It was incorporated as a village by the Legislature of Ohio in its 1829-1830 session. On March 15, 1830, Marion elected Nathan Peters as its first Mayor.