
Warren township
- County:
- Jo Daviess County
- County Seat:
- No
- Area (mi²):
- 35.949
- State:
- Illinois
Warren township is located in Jo Daviess County, Illinois. Warren township has a 2025 population of 64,351. Warren township is currently declining at a rate of -0.42% annually and its population has decreased by -2.14% since the most recent census, which recorded a population of 65,760 in 2020.
The average household income in Warren township is $137,436 with a poverty rate of 5.82%. The median age in Warren township is 38.7 years: 37.4 years for males, and 39.9 years for females.