Jefferson Township is one of seventeen townships in Kosciusko County, Indiana. As of the 2020 census, its population was 1,963 (down from 2,040 at 2010) and it contained 656 housing units.
Jefferson Township was organized in 1838.
According to the 2010 census, the township has a total area of , of which (or 99.84%) is land and (or 0.19%) is water.
(This list is based on USGS data and may include former settlements.)