Resident Population in Roscommon County, MI was 23.86300 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Roscommon County, MI reached a record high of 25.97800 in January of 2003 and a record low of 9.89200 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Roscommon County, MI - last updated from the United States Federal Reserve on May of 2024.