Mount Holly, Warren County, Ohio
Mount Holly (also Mount Helley, Mount Holley, Pences Mills) is an unincorporated community in Warren County, in the U.S. state of Ohio.
A sawmill and gristmill were built at Mount Holly as early as the 1810s. A post office called Mount Holly was established in 1843, and remained in operation until 1863.
Coordinates: 39°34′18″N 84°01′57″W / 39.57167°N 84.03250°W
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