New Middletown, OH is a city located in Mahoning County, Ohio and has a land area of 9.05 square miles (23.44 km2). The water area for the city is 0.08 square miles or 0.21 km2. There is one unique zip code in New Middletown, Ohio and it is 44442. The area code(s) for New Middletown is 330.
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