West Farmington, OH is a city located in Trumbull County, Ohio and has a land area of 30.59 square miles (79.23 km2). The water area for the city is 0.09 square miles or 0.23 km2. There is one unique zip code in West Farmington, Ohio and it is 44491. The area code(s) for West Farmington is 440.
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