Hamilton Township is one of sixteen townships in Franklin County, Iowa, United States.

As of the 2010 census, its population was 155 and it contained 75 housing units.

It was named for Andrew Hamilton, a pioneer settler and native of Ireland.

[3] As of the 2010 census, Hamilton Township covered an area of 36.22 square miles (93.8 km2), all land.

[1] The township contains Saint Johns Lutheran Cemetery.