Colfax Township is one of seventeen townships in Boone County, Iowa, United States.

It is named for Schuyler Colfax.

[3] Colfax Township covers an area of 34.97 square miles (90.6 km2) and contains no incorporated settlements.

According to the USGS, it contains one cemetery, Olive Branch.

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