Jefferson Township is one of nine townships in Wells County, Indiana, United States.

As of the 2020 census, its population was 5,841 (up from 5,762 at 2010[3]) and it contained 2,450 housing units.

[2] According to the 2010 census, the township has a total area of 47.13 square miles (122.1 km2), of which 46.98 square miles (121.7 km2) (or 99.68%) is land and 0.15 square miles (0.39 km2) (or 0.32%) is water.

[3] (This list is based on USGS data and may include former settlements.)

The township contains these three cemeteries: El Honan, Oak Lawn and Prairie View.