Washington Township is one of nine townships in Starke County, in the U.S. state of Indiana.

[3] As of the 2020 census, its population was 2,944 (down from 3,003 at 2010[4]) and it contained 1,214 housing units.

According to the 2010 census, the township has a total area of 36.19 square miles (93.7 km2), of which 36.13 square miles (93.6 km2) (or 99.83%) is land and 0.06 square miles (0.16 km2) (or 0.17%) is water.

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

The township contains these two cemeteries: Holy Cross and Swartzell.