Jefferson Township is one of sixteen townships in Elkhart County, Indiana. As of the 2010 census, its population was 9,688, up 3,143 from 6,545 in 2000, the largest numeric increase of any of the 16 townships in Elkhart County over that timespan.
According to the 2010 census, the township has a total area of , of which (or 99.60%) is land and (or 0.40%) is water.
The township contains four cemeteries: Cornell, Morris, Neff and Pine Creek.