Chatsworth Township is located in Livingston County, Illinois. As of the 2010 census, its population was 1,366 and it contained 639 housing units.
Chatsworth Township changed its name from Olivers Grove Township on October 11, 1859.
Chatsworth Township was named after the Chatsworth House, the country home of the Duke of Devonshire, England.
According to the 2010 census, the township has a total area of , of which (or 99.92%) is land and (or 0.06%) is water.