Rosedale Township is one of eleven townships in Jersey County, Illinois, United States.

As of the 2010 census, its population was 456 and it contained 295 housing units.

[2] The name of Rosedale Township was changed from Illinois Township on June 7, 1882.

According to the 2010 census, the township has a total area of 32.12 square miles (83.2 km2), of which 30.25 square miles (78.3 km2) (or 94.18%) is land and 1.87 square miles (4.8 km2) (or 5.82%) is water.

[2] The township contains two active cemeteries, Meadow Branch and Rosedale, as well as several that are inactive.