
Arrowsmith township
- County:
- McLean County
- County Seat:
- No
- Area (mi²):
- 36.13
- State:
- Illinois
Arrowsmith township is located in McLean County, Illinois. Arrowsmith township has a 2025 population of 441. Arrowsmith township is currently declining at a rate of -0.68% annually and its population has decreased by -2.65% since the most recent census, which recorded a population of 453 in 2020.
The average household income in Arrowsmith township is $86,918 with a poverty rate of 28.04%. The median age in Arrowsmith township is 35.1 years: 33.3 years for males, and 35.9 years for females.