Blue Rock, Ohio
Blue Rock is an unincorporated community in western Blue Rock Township, Muskingum County, Ohio, United States. Although it is unincorporated, it has a post office, with the ZIP code of 43720. It lies along the Muskingum River at the intersection of State Routes 60 and 376.
Coordinates: 39°48′00″N 81°53′29″W / 39.80000°N 81.89139°W
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