Rochester Township is one of eight townships in Fulton County, Indiana.

As of the 2020 census, its population was 10,201 (up from 10,181 at 2010[4]) and it contained 4,924 housing units.

According to the 2010 census, the township has a total area of 83.95 square miles (217.4 km2), of which 82.57 square miles (213.9 km2) (or 98.36%) is land and 1.38 square miles (3.6 km2) (or 1.64%) is water.

[4] (This list is based on USGS data and may include former settlements.)

The township contains five cemeteries: Antioch, Citizens, Independent Order of Odd Fellows, Mount Zion and Old Shelton.