
Farrington township
- County:
- Jefferson County
- County Seat:
- No
- Area (mi²):
- 36.669
- State:
- Illinois
Farrington township is located in Jefferson County, Illinois. Farrington township has a 2025 population of 564. Farrington township is currently declining at a rate of -0.18% annually and its population has decreased by -1.91% since the most recent census, which recorded a population of 575 in 2020.
The average household income in Farrington township is $78,896 with a poverty rate of 5.75%. The median age in Farrington township is 34.4 years: 30.4 years for males, and 36 years for females.