
Avena township
- County:
- Fayette County
- County Seat:
- No
- Area (mi²):
- 36.324
- State:
- Illinois
Avena township is located in Fayette County, Illinois. Avena township has a 2025 population of 1,876. Avena township is currently declining at a rate of -0.64% annually and its population has decreased by -2.95% since the most recent census, which recorded a population of 1,933 in 2020.
The average household income in Avena township is $72,562 with a poverty rate of 17.85%. The median age in Avena township is 42 years: 43 years for males, and 41.6 years for females.