Crete Township is located in Will County, Illinois. As of the 2010 census, its population was 23,774 and it contained 10,286 housing units. Washington Township was formed from a portion of Crete.
According to the 2010 census, the township has a total area of , of which (or 99.91%) is land and (or 0.09%) is water.
The population as of 2016 was 23,530.