Bloomingdale Township is one of nine townships in DuPage County, Illinois, USA. As of the 2020 census, its population was 111,875 and it contained 42,488 housing units. According to the 2021 census gazetteer files, Bloomingdale Township has a total area of 35.38 square miles, of which 34.17 square miles is land and 1.21 square miles is water.