Resident Population in Nicollet County, MN was 34.49300 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Nicollet County, MN reached a record high of 34.49800 in January of 2020 and a record low of 24.00000 in January of 1972. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Nicollet County, MN - last updated from the United States Federal Reserve on April of 2026.