Below is a list of Hannibal OH zip codes. For your research we have also included Hannibal Area Code, Time Zone, UTC and the local Monroe County FIPS Code. Each Hannibal Ohio zip code has a center Longitude / Latitude point (the Hannibal center is -80.868896484375 / 39.666999816895). For your convenience we have also indicated if that zip code in Hannibal observes Daylight Savings time.