Cincinnati township
- County:
- Pike County
- County Seat:
- No
- Area (mi²):
- 23.846
- State:
- Illinois
Cincinnati township is located in Pike County, Illinois. Cincinnati township has a 2026 population of 22. Cincinnati township is currently declining at a rate of 0% annually and its population has decreased by -4.35% since the most recent census, which recorded a population of 23 in 2020.