Chambersburg township
- County:
- Pike County
- County Seat:
- No
- Area (mi²):
- 29.011
- State:
- Illinois
Chambersburg township is located in Pike County, Illinois. Chambersburg township has a 2026 population of 134. Chambersburg township is currently declining at a rate of 0% annually and its population has decreased by -1.47% since the most recent census, which recorded a population of 136 in 2020.
The median age in Chambersburg township is 45.5 years: 43.6 years for males, and 47.3 years for females. For every 100 females there are 127.7 males.