Collinsville Township is located in Madison County, Illinois, in the United States. As of the 2010 census, its population was 36,265 and it contained 16,407 housing units.[2]
History
Collinsville Township takes its name from the city of Collinsville.[3]
Geography
According to the 2010 census, the township has a total area of 35.73 square miles (92.5 km2), of which 34.86 square miles (90.3 km2) (or 97.57%) is land and 0.87 square miles (2.3 km2) (or 2.43%) is water.[2]