Orange Township is one of twenty-one townships in Knox County, Illinois, United States.

As of the 2010 census, its population was 556 and it contained 246 housing units.

[2] According to the 2010 census, the township has a total area of 36.27 square miles (93.9 km2), of which 36.26 square miles (93.9 km2) (or 99.97%) is land and 0.02 square miles (0.052 km2) (or 0.06%) is water.

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

The township contains these five cemeteries: Cook, Ferguson, Haynes, Maxey-Mathers and McCallister.