Resident Population in Keweenaw County, MI was 2.17200 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Keweenaw County, MI reached a record high of 2.40000 in January of 1971 and a record low of 1.69700 in January of 1990. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Keweenaw County, MI - last updated from the United States Federal Reserve on May of 2024.