Waynesville township
- County:
- De Witt County
- County Seat:
- No
- Area (mi²):
- 24.386
- State:
- Illinois
Waynesville township is located in De Witt County, Illinois. Waynesville township has a 2026 population of 631. Waynesville township is currently declining at a rate of -0.16% annually and its population has decreased by -0.94% since the most recent census, which recorded a population of 637 in 2020.
The median household income in Waynesville township is $64,167 with a poverty rate of 24.24%. The median age in Waynesville township is 52.2 years: 50.8 years for males, and 52.5 years for females. For every 100 females there are 88.0 males.