Friends Creek Township is located in Macon County, Illinois. As of the 2010 census, its population was 1,450 and it contained 601 housing units.
Friends Creek Township is the home of the Friends Creek Conservation Area, a 616-acre county conservation area that is the largest park physically located in the township. According to the 2010 census, the township has a total area of , of which (or 99.98%) is land and (or 0.02%) is water.