Mount Hermon, KY is a city located in Monroe County, Kentucky and has a land area of 18.53 square miles (47.99 km2). The water area for the city is 0.03 square miles or 0.08 km2. There is one unique zip code in Mount Hermon, Kentucky and it is 42157. The area code(s) for Mount Hermon is 270/364.
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