Rochester Township, Sangamon County, Illinois

Rochester Township is located in Sangamon County, Illinois. As of the 2010 census, its population was 5,361 and it contained 2,081 housing units.

Geography
According to the 2010 census, the township has a total area of 33.63 sqmi, of which 33.42 sqmi (or 99.38%) is land and 0.22 sqmi (or 0.65%) is water.