Willow Hill Township is one of eleven townships in Jasper County, Illinois, USA.

As of the 2010 census, its population was 639 and it contained 279 housing units.

[2] According to the 2010 census, the township has a total area of 34.16 square miles (88.5 km2), of which 34.13 square miles (88.4 km2) (or 99.91%) is land and 0.03 square miles (0.078 km2) (or 0.09%) is water.

[2] The township contains these four cemeteries: Edison, Miller, Shiloh and Todd.