
Forreston township
- County:
- Ogle County
- County Seat:
- No
- Area (mi²):
- 36.342
- State:
- Illinois
Forreston township is located in Ogle County, Illinois. Forreston township has a 2025 population of 1,949. Forreston township is currently declining at a rate of -0.31% annually and its population has decreased by -1.96% since the most recent census, which recorded a population of 1,988 in 2020.
The average household income in Forreston township is $77,354 with a poverty rate of 5.98%. The median age in Forreston township is 45.2 years: 43.3 years for males, and 47.9 years for females.