Marion Township is located in Lee County, Illinois.

As of the 2010 census, its population was 232 and it contained 114 housing units.

Three years later, on March 3, 1857, the western half of the township became Harmon Township allowing Marion Township to take its present form.

[3] According to the 2010 census, the township has a total area of 35.64 square miles (92.3 km2), of which 35.63 square miles (92.3 km2) (or 99.97%) is land and 0.02 square miles (0.052 km2) (or 0.06%) is water.

This Lee County, Illinois location article is a stub.