Warren Township is one of twenty-three townships in Jo Daviess County, Illinois, USA. As of the 2010 census, its population was 1,601, and it contained 770 housing units. Its name changed from Courtland Township in 1865.

Geography

According to the 2010 census, the township has a total area of 19.7 square miles (51 km), all land.

Cities, towns, villages

• Village of Warren

Cemeteries

The township contains two cemeteries: Elmwood and Saint Annes Catholic.

Major highways

• Illinois Route 78

Demographics

Historical population

Census	Pop.	Note	%±
2016 (est.)	1,518
U.S. Decennial Census

School districts

• Warren Community Unit School District 205

Political districts

• Illinois' 16th congressional district
• State House District 89
• State Senate District 45