Resident Population in Alger County, MI was 8.75700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Alger County, MI reached a record high of 9.94500 in January of 1999 and a record low of 8.20000 in January of 1972. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Alger County, MI - last updated from the United States Federal Reserve on May of 2024.