Minnesota City is a city in Winona County, Minnesota, United States. The population was 202 at the 2020 census. Minnesota City was platted i…Minnesota City is a city in Winona County, Minnesota, United States. The population was 202 at the 2020 census. Minnesota City was platted in March 1852. The city took its name from the Minnesota Territory. A post office has been in operation in Minnesota City since 1852.