Lewisville is a village in Monroe County, Ohio, United States.

According to the United States Census Bureau, the village has a total area of 0.37 square miles (0.96 km2), all of it land.

31.6% of all households were made up of individuals, and 14.5% had someone living alone who was 65 years of age or older.

30.5% of all households were made up of individuals, and 21.1% had someone living alone who was 65 years of age or older.

About 6.5% of families and 10.1% of the population were below the poverty line, including none of those under the age of eighteen and 19.6% of those 65 or over.