
Clarion township
- County:
- Bureau County
- County Seat:
- No
- Area (mi²):
- 35.354
- State:
- Illinois
Clarion township is located in Bureau County, Illinois. Clarion township has a 2025 population of 394. Clarion township is currently declining at a rate of -0.25% annually and its population has decreased by -1.99% since the most recent census, which recorded a population of 402 in 2020.
The average household income in Clarion township is $91,220 with a poverty rate of 5.16%. The median age in Clarion township is 46.2 years: 41.5 years for males, and 46.4 years for females.