Chatham Township is located in Sangamon County, Illinois. As of the 2010 census, its population was 6,978 and it contained 2,963 housing units. Chatham Township changed its name from Campbell Township on September 2, 1863. Geography According to the 2010 census, the township has a total area of , of which (or 99.92%) is land and (or 0.08%) is water. Demographics References External links City-data.com Illinois State Archives Townships in Sangamon County, Illinois Springfield metropolitan area, Illinois Townships in Illinois