rivers was chosen as the county seat in May 1824.

Geography

thumbAccording to the 2010 census, the county has a total area of 660.02 sqmi, the largest county in Indiana, of which 657.31 sqmi (or 99.59%) is land and 2.71 sqmi (or 0.41%) is water.

Adjacent counties

* Noble County (northwest)
* DeKalb County (north)
* Defiance County, Ohio

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