Harrison Township is one of seventeen townships in Kosciusko County, Indiana. As of the 2020 census, its population was 3,786 (up from 3,587 at 2010) and it contained 1,569 housing units.
Harrison Township was organized in 1838.
According to the 2010 census, the township has a total area of , of which (or 97.16%) is land and (or 2.84%) is water.
(This list is based on USGS data and may include former settlements.)
Harrison Township residents may obtain a free library card from the Bell Memorial Public Library in Mentone.