Preemption Township, Mercer County, Illinois

Preemption Township is located in Mercer County, Illinois. As of the 2010 census, its population was 1,783 and it contained 737 housing units. Preemption Township changed its name from Fairfield Township sometime before 1921.

Geography
According to the 2010 census, the township has a total area of 36.88 sqmi, of which 36.85 sqmi (or 99.92%) is land and 0.03 sqmi (or 0.08%) is water.