Hannibal Map
Hannibal is a census-designated place in eastern Ohio Township, Monroe County, Ohio, United States. Although it is unincorporated, it has a post office, with the ZIP code of 43931. It lies along State Route 7.
An Ohio River town, it lies below Powhatan Point and above Sardis.
Nearby cities include Reader, Middlebourne, Pine Grove, Powhatan Point, Woodsfield.