
Tompkins township
- County:
- Warren County
- County Seat:
- No
- Area (mi²):
- 36.551
- State:
- Illinois
Tompkins township is located in Warren County, Illinois. Tompkins township has a 2025 population of 832. Tompkins township is currently declining at a rate of -1.3% annually and its population has decreased by -6.73% since the most recent census, which recorded a population of 892 in 2020.
The average household income in Tompkins township is $82,148 with a poverty rate of 6.18%. The median age in Tompkins township is 40.2 years: 40.4 years for males, and 40 years for females.