Martins Ferry, OH is a city located in Belmont County, Ohio and has a land area of 19.31 square miles (50.01 km2). The water area for the city is 0.08 square miles or 0.21 km2. There is one unique zip code in Martins Ferry, Ohio and it is 43935. The area code(s) for Martins Ferry is 740/220.
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