Dillonvale, OH is a city located in Jefferson County, Ohio and has a land area of 32.31 square miles (83.68 km2). The water area for the city is 0.05 square miles or 0.13 km2. There is one unique zip code in Dillonvale, Ohio and it is 43917. The area code(s) for Dillonvale is 740.
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