New Middletown is a village in southeastern Mahoning County, Ohio, United States.

[6] The village was most likely named after Middletown, Dauphin County, Pennsylvania, the former home of a share of the first settlers.

[5] According to the United States Census Bureau, the village has a total area of 0.87 square miles (2.25 km2), all land.

There were 741 housing units at an average density of 851.7 per square mile (328.8/km2).

28.0% of all households were made up of individuals, and 16% had someone living alone who was 65 years of age or older.

25.1% of all households were made up of individuals, and 12.0% had someone living alone who was 65 years of age or older.

Children in New Middletown are served by the Springfield Local School District.