Bloom Township is one of 29 townships in Cook County, Illinois, USA. As of the 2020 census, its population was 86,018 and it contained 33,964 housing units. According to the United States Census Bureau, Bloom Township covers an area of 46.7 square miles ; of this, 46.4 square miles is land and 0.27 square miles, or 0.59 percent, is water.