Resident Population in Koochiching County, MN was 11.59400 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Koochiching County, MN reached a record high of 17.60000 in January of 1972 and a record low of 11.59400 in January of 2024. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Koochiching County, MN - last updated from the United States Federal Reserve on April of 2026.