Hannibal, NY is a city located in Oswego County, New York and has a land area of 42.30 square miles (109.56 km2). The water area for the city is 0.17 square miles or 0.44 km2. There is one unique zip code in Hannibal, New York and it is 13074. The area code(s) for Hannibal is 315/680.
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