As of the 2010 census, its population was 41,217 and it contained 19,510 housing units.

[4] The Forest Hills Country Club and Abram Gaar House and Farm are listed on the National Register of Historic Places.

[3] The streams of Boro Brook, Bridge Brook, Chester Creek, Clear Creek, Evans Creek, Middle Fork East Fork Whitewater River, Mud Creek, Short Creek, Spring Run, Tree Brook and West Fork/East Fork of Whitewater River run through this township.

(This list is based on USGS data and may include former settlements.)

The township contains eight cemeteries: Earlham, Hoover Bulla, King, Lutherania, Ridge, Saint Andrews, State Line and Wernle.