Resident Population in Cook County, MN was 5.57100 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Cook County, MN reached a record high of 5.73200 in January of 2022 and a record low of 3.42300 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Cook County, MN - last updated from the United States Federal Reserve on April of 2026.