Millville Township is named from the mill constructed there about 1833.

[1] Millville Township covers an area of 35.26 square miles (91.3 km2) and contains one incorporated settlement, Millville.

[2] According to the USGS, it contains six cemeteries: Bierer, Friedlein, Goshen, Graham, Griffith and Redman.

The stream of Little Turkey River runs through this township.

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