
Thornton township
- County:
- Cook County
- County Seat:
- No
- Area (mi²):
- 46.897
- State:
- Illinois
Thornton township is located in Cook County, Illinois. Thornton township has a 2025 population of 148,124. Thornton township is currently declining at a rate of -0.8% annually and its population has decreased by -5.81% since the most recent census, which recorded a population of 157,255 in 2020.
The average household income in Thornton township is $73,911 with a poverty rate of 20.56%. The median age in Thornton township is 38.3 years: 35.1 years for males, and 41.1 years for females.