Mapleton is a city in Blue Earth County, Minnesota, United States. The population was 1,756 at the 2010 census. It is part of the Mankato–North Mankato Metropolitan Statistical Area.
According to the United States Census Bureau, the city has a total area of 1.5 square miles (3.9 km²), all of it land.
Minnesota State Highways 22 and 30 are two of the main routes in the city.