Martinsburg township
- County:
- Pike County
- County Seat:
- No
- Area (mi²):
- 37.743
- State:
- Illinois
Martinsburg township is located in Pike County, Illinois. Martinsburg township has a 2026 population of 369. Martinsburg township is currently declining at a rate of 0% annually and its population has decreased by -1.34% since the most recent census, which recorded a population of 374 in 2020.
The median household income in Martinsburg township is $54,688 with a poverty rate of 7.37%. The median age in Martinsburg township is 62.8 years: 47.5 years for males, and 67.6 years for females. For every 100 females there are 128.4 males.