Resident Population in Grant County, MN was 6.13900 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Grant County, MN reached a record high of 7.50000 in January of 1972 and a record low of 5.80600 in January of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Grant County, MN - last updated from the United States Federal Reserve on May of 2024.