Colfax Township is one of ten townships in Newton County, Indiana, United States.

As of the 2020 census, its population was 155 and it contained 70 housing units.

[2] Colfax Township was established in 1871.

It was named for Vice President Schuyler Colfax.

[4] According to the 2010 census, the township has a total area of 36.53 square miles (94.6 km2), all land.