Oregon Township is one of nine townships in Starke County, Indiana.

[3] As of the 2020 census, its population was 3,220 (down from 3,367 at 2010[4]) and it contained 1,658 housing units.

According to the 2010 census, the township has a total area of 36.12 square miles (93.6 km2), of which 35.65 square miles (92.3 km2) (or 98.70%) is land and 0.47 square miles (1.2 km2) (or 1.30%) is water.

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

The township contains Fletcher Cemetery.