Derry township
- County:
- Pike County
- County Seat:
- No
- Area (mi²):
- 37.414
- State:
- Illinois
Derry township is located in Pike County, Illinois. Derry township has a 2026 population of 210. Derry township is currently declining at a rate of -0.47% annually and its population has decreased by -1.87% since the most recent census, which recorded a population of 214 in 2020.
The median household income in Derry township is $108,125 with a poverty rate of 5.2%. The median age in Derry township is 15.8 years: 15.1 years for males, and 26.9 years for females. For every 100 females there are 238.4 males.