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is a city in Richland County in the U.S. state of Ohio, northwest of the city of Mansfield. It is part of the Mansfield, Ohio Metropolitan Statistical Area. The population was 9,821 at the 2000 census.
Shelby is located at (40.884645, -82.659529), along the Black Fork of the Mohican River.
According to the United States Census Bureau, the city has a total area of 5.1 square miles (13.2 km²), of which, 5.0 square miles (13.1 km²) of it is land and 0.1 square miles (0.2 km²) of it (1.37%) is water.