Riverdale is a neighborhood of Dayton, Ohio, United States.
It is situated northwest of Dayton across the Great Miami River.
The Geographic Names Information System (GNIS) lists the location of Riverdale at 39°46′12″N 84°11′40″W / 39.77°N 84.1944444°W / 39.77; -84.1944444,[1] which is now a part of the McPherson Town Historic District.
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