Glen Township is a township in Aitkin County, Minnesota, United States. The population was 450 as of the 2010 census. According to the United States Census Bureau, the township has a total area of 36.6 square miles, of which 33.8 square miles is land and 2.8 square miles, or 7.59%, is water. Located within and adjacent to Glen Township is an unincorpo…Glen Township is a township in Aitkin County, Minnesota, United States. The population was 450 as of the 2010 census. According to the United States Census Bureau, the township has a total area of 36.6 square miles, of which 33.8 square miles is land and 2.8 square miles, or 7.59%, is water. Located within and adjacent to Glen Township is an unincorporated community and business district, named Glen, with a restaurant, bar, garage, corner store and laundry.