Caseyville Township is located in St. Clair County, Illinois, United States. As of the 2010 census, its population was 31,996 and it contained 14,054 housing units.
Geography According to the 2010 census, the township has a total area of , of which (or 99.32%) is land and (or 0.66%) is water.
Demographics
References
External links Official Website City-data.com St. Clair County Official Site Illinois State Archives