Jackson Township is one of seventeen townships in Kosciusko County, Indiana. As of the 2020 census, its population was 1,233 (slightly down from 1,238 at 2010[4]) and it contained 509 housing units.
According to the 2010 census, the township has a total area of 29.01 square miles (75.1 km2), of which 28.76 square miles (74.5 km2) (or 99.14%) is land and 0.24 square miles (0.62 km2) (or 0.83%) is water.[4]