
Centreville township
- County:
- St. Clair County
- County Seat:
- No
- Area (mi²):
- 27.929
- State:
- Illinois
Centreville township is located in St. Clair County, Illinois. Centreville township has a 2025 population of 18,865. Centreville township is currently declining at a rate of -1.26% annually and its population has decreased by -6.29% since the most recent census, which recorded a population of 20,132 in 2020.
The average household income in Centreville township is $56,629 with a poverty rate of 30.7%. The median age in Centreville township is 35.4 years: 38.6 years for males, and 33.5 years for females.