Resident Population in Lyon County, MN was 25.57700 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Lyon County, MN reached a record high of 25.99600 in January of 2016 and a record low of 24.27300 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Lyon County, MN - last updated from the United States Federal Reserve on April of 2026.