Blue Rock is an unincorporated community in western Blue Rock Township, Muskingum County, Ohio, United States.[1] It is a part of the Franklin Local School District. Blue Rock State Park is located within Blue Rock, Ohio.
Although Blue Rock is unincorporated, it has a post office, with the ZIP code of 43720, which is located in the similarly unincorporated community of Gaysport,[2] which lies along the Muskingum River at the intersection of State Routes 60 and 376.