Windsor Township is a township in Berks County, Pennsylvania, United States. The population was 2,279 at the 2010 census. According to the U.S. Census Bureau, the township has a total area of 22.6 square miles, of which 22.5 square miles is land and 0.1 square mile is water. The town was drained by the Schuylkill River and its northern portion is locateā¦Windsor Township is a township in Berks County, Pennsylvania, United States. The population was 2,279 at the 2010 census. According to the U.S. Census Bureau, the township has a total area of 22.6 square miles, of which 22.5 square miles is land and 0.1 square mile is water. The town was drained by the Schuylkill River and its northern portion is located on Blue Mountain. The township's villages include Dreibelbis, Edenburg, and Windsor Castle.