
Osage township
- County:
- LaSalle County
- County Seat:
- No
- Area (mi²):
- 38.294
- State:
- Illinois
Osage township is located in LaSalle County, Illinois. Osage township has a 2025 population of 246. Osage township is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 246 in 2020.
The average household income in Osage township is $58,805 with a poverty rate of 12.25%. The median age in Osage township is 58.8 years: 63.2 years for males, and 58.5 years for females.