ZIP Code 43346
About Roundhead
Roundhead is an unincorporated community in southeastern Roundhead Township, Hardin County, Ohio, United States. It has a post office with the ZIP code 43346.
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Area Profile
US Census (ACS 5-year · Gazetteer)
180
population
168
people / sq mi
7.1
median age
30
housing units
30
households
1.1
land area (sq mi)