Richland Township is located in LaSalle County, Illinois. As of the 2010 census, its population was 379 and it contained 173 housing units. Richland Township was formed from Bruce Township on an unknown date.
According to the 2010 census, the township has a total area of 24.27 square miles (62.9 km2), all land.
Coordinates: 41°08′41″N 89°01′07″W / 41.14472°N 89.01861°W / 41.14472; -89.01861