Harmon Township is located in Lee County, Illinois.

As of the 2010 census, its population was 378 and it contained 161 housing units.

[2] Harmon Township was formed from Marion Township on March 3, 1857.

According to the 2010 census, the township has a total area of 35.86 square miles (92.9 km2), all land.

This Lee County, Illinois location article is a stub.