Marion is a city in and the county seat of Marion County, Ohio, United States. The municipality is located in north-central Ohio, approximately 50 miles (80 km) north of Columbus.
The population was 36,837 at the 2010 census, and is estimated to be 35,883 in 2019. It is the largest city in Marion County and the principal city of the Marion, OH Micropolitan Statistical Area. It is also part 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 life and is buried at Harding Tomb.The city and its development were closely related to industrialist Edward Huber and his extensive business interests. The city is home to several historic properties, some listed on the National Register of Historic Places listings in Marion County, Ohio.
Marion currently styles itself as "America's Workforce Development Capital" given public–private educational partnerships and coordination of educational venues, from four and two–year college programs to vocational and technical training and skill certification programs.The mayor of Marion is Scott Schertzer.


The city of Marion is located at 40°25′17″N 83°40′1″W (40.430972, -83.667222). According to the United States Census Bureau, the city has a total area of , all land.
As of the census of 2010, there were 36,837 people and 13,967 households in the city with 2 or more persons per household living in 29% and 38% having children under 18 years old living with them respectively; The population density was . There were 14 housing units at an average density of . The racial makeup was 92.

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