Mansfield is a city in the U.S. state of Ohio and the county seat of Richland County. The municipality is located in north-central Ohio in the western foothills of the Allegheny Plateau, approximately 80 miles (130 km) southwest of Cleveland and 66 miles (106 km) northeast of Columbus.
It was founded in 1808 on a fork of the Mohican River in a hilly region surrounded by fertile farmlands, and became a manufacturing center owing to its location with numerous railroad lines. After the decline of heavy manufacturing, the city's industry has since diversified into a service economy, including retailing, education, and healthcare sectors.
The population of the city was 49,346 at the 2000 census. According to the 2010 Census, which was released on March 9, 2011, Mansfield's population declined 3.1%, down to 47,821 residents. The US Census 2009 estimates indicate that the Mansfield, OH Metropolitan Statistical Area has a population of 124,490 residents, while the Mansfield-Bucyrus, OH Combined Statistical Area has 167,893 residents.