Hardin, Ohio
Hardin is an unincorporated community in Shelby County, in the U.S. state of Ohio.
Hardin was platted in 1816. The community was named for John Hardin (1753–1792), a Continental Army officer in the American Revolutionary War. Hardin was the county seat from 1819 until 1820. A post office called Hardin was established in 1820, and discontinued in 1909.
Coordinates: 40°17′11″N 84°14′32″W / 40.28639°N 84.24222°W
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