Sidell Township is a township in Vermilion County, Illinois, USA.

As of the 2010 census, its population was 1,073 and it contained 445 housing units.

[2] Sidell Township was created in 1867.

According to the 2010 census, the township has a total area of 43.38 square miles (112.4 km2), all land.

[2] The township contains one cemetery, Fairview.