Prospect is a village in Marion County, Ohio, United States.

According to the United States Census Bureau, the village has a total area of 0.72 square miles (1.86 km2), all land.

There were 494 housing units at an average density of 686.1 per square mile (264.9/km2).

26.9% of all households were made up of individuals, and 9.3% had someone living alone who was 65 years of age or older.

There were 490 housing units at an average density of 675.9 per square mile (261.0/km2).

21.5% of all households were made up of individuals, and 9.4% had someone living alone who was 65 years of age or older.