
Roundhead township
- County:
- Hardin County
- County Seat:
- No
- Area (mi²):
- 25.862
- State:
- Ohio
Roundhead township is located in Hardin County, Ohio. Roundhead township has a 2025 population of 630. Roundhead township is currently declining at a rate of -0.63% annually and its population has decreased by -3.23% since the most recent census, which recorded a population of 651 in 2020.
The average household income in Roundhead township is $81,607 with a poverty rate of 11.6%. The median age in Roundhead township is 32.1 years: 32.9 years for males, and 29.9 years for females.