Centralia Township is located in Marion County, Illinois.

As of the 2010 census, its population was 15,042 and it contained 7,360 housing units.

The city of Centralia is located in the western part of the township.

According to the 2010 census, the township has a total area of 36.1 square miles (93 km2), of which 35.02 square miles (90.7 km2) (or 97.01%) is land and 1.08 square miles (2.8 km2) (or 2.99%) is water.

This Marion County, Illinois location article is a stub.