Coshocton County is a county located in the U.S. state of Ohio. As of the 2010 census, the population was 36,901. Its county seat is Coshocton. The county was formed on January 31, 1810 from portions of Muskingum and Tuscarawas Counties and later organized in 1811. Its name comes from the Delaware Indian language and has been translated as "union of waters" or "black bear crossing".The Coshocton, OH Micropolitan Statistical Area includes all of Coshocton County.