Decker Township is located in Richland County, Illinois. As of the 2010 census, its population was 406 and it contained 170 housing units.[2]
History
Decker Township bears the name of Thomas J. Decker, a local pioneer.[3] Before May 2, 1859, the township was known as Jackson Township.[4]: Township Names
Geography
According to the 2010 census, the township has a total area of 35.26 square miles (91.3 km2), of which 35.23 square miles (91.2 km2) (or 99.91%) is land and 0.03 square miles (0.078 km2) (or 0.09%) is water.[2]