Jackson is a city in and the county seat of Jackson County, Minnesota, United States. The population was 3,323 at the 2020 census. For cen…Jackson is a city in and the county seat of Jackson County, Minnesota, United States. The population was 3,323 at the 2020 census. For centuries, many indigenous peoples called this area home, including the Cheyenne, Ioway, and Dakota tribes. In 1851, the Treaty of Traverse des Sioux opened the region to white settlement in exchange for payments from the government.