Jefferson Township is located in Stephenson County, Illinois, United States.

As of the 2010 census, its population was 268 and it contained 117 housing units.

[2] Jefferson is Township 26 North, Range 5 (part) East of the Fourth Principal Meridian.

According to the 2010 census, the township has a total area of 18.26 square miles (47.3 km2), all land.

This Stephenson County, Illinois location article is a stub.