Owensville is a village in Clermont County, Ohio, United States. The population was 794 at the 2010 census.
Owensville was called Boston, and under the latter name was platted in 1836. A post office called Owensville has been in operation since 1832. The present name is derived from Mr. Owens, the first postmaster.
Owensville is located at 39°7′19″N 84°8′13″W (39.121851, -84.136990).
According to the United States Census Bureau, the village has a total area of 0.43 square miles (1.11 km2), all land.
As of the census of 2010, there were 794 people, 387 households, and 196 families living in the village. The population density was 1,846.5 inhabitants per square mile (712.9/km2). There were 429 housing units at an average density of 997.7 per square mile (385.2/km2). The racial makeup of the village was 97.9% White, 0.1% African American, 0.3% Asian, and 1.8% from two or more races. Hispanic or Latino of any race were 0.8% of the population.