Roundhead township represents an area within the Roundhead township subdivision of the Hardin County (Ohio),
which is not part of any official city, town or other place of the Roundhead township subdivision.
This area is populated by approximatelly 720 people and occupies the area of 26 square miles - 0 square miles represent water areas.
Racial makeup of the population is : White (97.92%), Two or More races (1.11%) and Some Other Race (0.42%).
The male part of the population has a median age of 41 and the “median female” is 42 years old.
Statistical data for the Roundhead township based on the 2010 U.S. Census