As of the 2020 census, its population was 4,566 (slightly down from 4,571 at 2010[4]) and it contained 1,975 housing units.

Deer Creek Township was organized in 1828.

[5] The Baum-Shaeffer Farm, Carrollton Bridge, Deer Creek Valley Rural Historic District, Delphi Lime Kilns, Lock No.

33, Fred and Minnie Raber Farm, Sunset Point, and Wilson Bridge are listed on the National Register of Historic Places.

[4] The township contains eight cemeteries: Bostetter, Delphi, Mears, Robinson, Saint Josephs, Sharp Point, Whistler and Wingard.