Donnelsville is a village in Clark County, Ohio, United States.

[6] According to the United States Census Bureau, the village has a total area of 0.39 square miles (1.01 km2), all of it land.

There were 133 housing units at an average density of 341.0 per square mile (131.7/km2).

21.9% of all households were made up of individuals, and 8.7% had someone living alone who was 65 years of age or older.

13.3% of all households were made up of individuals, and 4.1% had someone living alone who was 65 years of age or older.

About 4.5% of families and 9.5% of the population were below the poverty line, including 15.3% of those under the age of eighteen and none of those 65 or over.