Jefferson Township is one of fourteen townships in Carroll County, Indiana. As of the 2020 census, its population was 2,275 (up from 2,162 at 2010) and it contained 1,648 housing units.
Jefferson Township was organized in 1836.
According to the 2010 census, the township has a total area of , of which (or 96.75%) is land and (or 3.25%) is water.
(This list is based on USGS data and may include former settlements.)
The township contains two cemeteries: Schock and Yeoman.
Jefferson Township residents may obtain a library card at the Delphi Public Library in Delphi.