De Witt Township was organized in 1843.

[1] De Witt Township covers an area of 54.48 square miles (141.1 km2) and contains one incorporated settlement, De Witt.

According to the USGS, it contains two cemeteries: Elmwood and Saint Joseph.

The Ames Creek Bridge, which carries 300th St. over Ames Creek, is listed on the National Register of Historic Places.

This article about the geography of Clinton County, Iowa is a stub.