Resident Population in Mackinac County, MI was 10.85100 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Mackinac County, MI reached a record high of 11.90200 in January of 2000 and a record low of 9.66000 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Mackinac County, MI - last updated from the United States Federal Reserve on May of 2024.