
Denison township
- County:
- Lawrence County
- County Seat:
- No
- Area (mi²):
- 57.901
- State:
- Illinois
Denison township is located in Lawrence County, Illinois. Denison township has a 2025 population of 1,232. Denison township is currently declining at a rate of -1.6% annually and its population has decreased by -8.94% since the most recent census, which recorded a population of 1,353 in 2020.
The average household income in Denison township is $89,196 with a poverty rate of 9.77%. The median age in Denison township is 39.2 years: 29.2 years for males, and 45.9 years for females.