Copley township
- County:
- Knox County
- County Seat:
- No
- Area (mi²):
- 35.073
- State:
- Illinois
Copley township is located in Knox County, Illinois. Copley township has a 2026 population of 382. Copley township is currently growing at a rate of 0.53% annually but its population has decreased by -2.3% since the most recent census, which recorded a population of 391 in 2020.
The median household income in Copley township is $92,031 with a poverty rate of 4.08%. The median age in Copley township is 37.1 years: 32.9 years for males, and 41 years for females. For every 100 females there are 91.7 males.