As of the 2010 census, its population was 37,749 and it contained 14,922 housing units.

[3] The township derives its name from the Ohio River, which forms its southern border.

[4] The Angel Mounds, Ellerbusch site, and Roberts-Morton House are listed on the National Register of Historic Places.

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

The township contains these four cemeteries: Casey, Greenwood, Hedge and Rose Hill.