Chester Township is located in Logan County, Illinois. As of the 2010 census, its population was 669 and it contained 298 housing units. Chester Township changed its name from Madison Township sometime prior to 1921. Geography According to the 2010 census, the township has a total area of , of which (or 99.95%) is land and (or 0.05%) is water. Demographics References External links US Census City-data.com Illinois State Archives Townships in Logan County, Illinois Townships in Illinois