Patoka Township is located in Marion County, Illinois. As of the 2010 census, its population was 1,038 and it contained 523 housing units.
Patoka Township (T4N R1E) is centered at 38ð47'N 89ð5'W (38.780, -89.086). It is traversed northâÂÂsouth by U.S. Route 51 and eastâÂÂwest by the North Fork of the Kaskaskia River. The city of Patoka is located near the south end of the township. According to the 2010 census, the township has a total area of , of which (or 99.94%) is land and (or 0.09%) is water.