Cotton Hill township
- County:
- Sangamon County
- County Seat:
- No
- Area (mi²):
- 29.86
- State:
- Illinois
Cotton Hill township is located in Sangamon County, Illinois. Cotton Hill township has a 2026 population of 973. Cotton Hill township is currently declining at a rate of -0.1% annually and its population has decreased by -1.42% since the most recent census, which recorded a population of 987 in 2020.
The median household income in Cotton Hill township is $95,179 with a poverty rate of 13.92%. The median age in Cotton Hill township is 54.3 years: 54.5 years for males, and 53.7 years for females. For every 100 females there are 104.3 males.