
Arenzville township
- County:
- Cass County
- County Seat:
- No
- Area (mi²):
- 36.717
- State:
- Illinois
Arenzville township is located in Cass County, Illinois. Arenzville township has a 2025 population of 724. Arenzville township is currently declining at a rate of -0.55% annually and its population has decreased by -3.98% since the most recent census, which recorded a population of 754 in 2020.
The average household income in Arenzville township is $79,151 with a poverty rate of 5.17%. The median age in Arenzville township is 53.3 years: 51.9 years for males, and 55 years for females.