Resident Population in Fillmore County, MN was 21.52200 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Fillmore County, MN reached a record high of 22.20000 in January of 1976 and a record low of 20.65100 in January of 1991. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Fillmore County, MN - last updated from the United States Federal Reserve on May of 2024.