Manhattan Township is located in Will County, Illinois. As of the 2010 census, its population was 9,218 and it contained 3,199 housing units. Manhattan Township was formed from the western half of Trenton Township at an unknown date.
According to the 2010 census, the township has a total area of 36.85 square miles (95.4 km2), all land.
Coordinates: 41°25′57″N 87°57′14″W / 41.43250°N 87.95389°W / 41.43250; -87.95389