
Martinsburg
- County:
- Knox County
- County Seat:
- No
- Area (mi²):
- 0.177
- State:
- Ohio
Martinsburg is a village located in Knox County, Ohio. Martinsburg has a 2025 population of 218. Martinsburg is currently declining at a rate of -0.46% annually and its population has decreased by -3.11% since the most recent census, which recorded a population of 225 in 2020.
The average household income in Martinsburg is $59,884 with a poverty rate of 7.32%. The median age in Martinsburg is 38.8 years: 31.5 years for males, and 40.5 years for females.