Resident Population in Muskingum County, OH was 86.30500 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Muskingum County, OH reached a record high of 86.57400 in January of 2021 and a record low of 77.82600 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Muskingum County, OH - last updated from the United States Federal Reserve on May of 2024.