
Forest City township
- County:
- Mason County
- County Seat:
- No
- Area (mi²):
- 33.312
- State:
- Illinois
Forest City township is located in Mason County, Illinois. Forest City township has a 2025 population of 434. Forest City township is currently declining at a rate of -1.59% annually and its population has decreased by -6.47% since the most recent census, which recorded a population of 464 in 2020.
The average household income in Forest City township is $70,939 with a poverty rate of 20.53%. The median age in Forest City township is 44.5 years: 44.1 years for males, and 44.8 years for females.