Resident Population in Polk County, MN was 30.41200 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Polk County, MN reached a record high of 35.50000 in January of 1977 and a record low of 30.41200 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Polk County, MN - last updated from the United States Federal Reserve on May of 2024.