Preston Township is located in Richland County, Illinois.

As of the 2010 census, its population was 1,247 and it contained 635 housing units.

[2] Before May 2, 1859, this locale was known as Douglas Township.

[3]: Township Names According to the 2010 census, the township has a total area of 41.53 square miles (107.6 km2), of which 40.73 square miles (105.5 km2) (or 98.07%) is land and 0.8 square miles (2.1 km2) (or 1.93%) is water.

This Richland County, Illinois location article is a stub.