Hannibal is a village in Oswego County, New York, United States. The population was 555 at the 2010 census. The village is named after Hannibal, the hero of ancient Carthage.
Hannibal is located at 43°19′15″N 76°34′34″W / 43.32083°N 76.57611°W / 43.32083; -76.57611 (43.320945, -76.576193). The village is located on Nine Mile Creek.
According to the United States Census Bureau, the village has a total area of 1.1 square miles (3.0 km²). It contains no significant bodies of water.
At the 2000 census, there were 542 people, 213 households and 138 families residing in the village. The population density was 476.5 per square mile (183.6/km²). There were 235 housing units at an average density of 206.6 per square mile (79.6/km²). The racial makeup of the village was 98.89% White, 0.55% Black or African American, 0.37% Native American, and 0.18% from two or more races. Hispanic or Latino of any race were 0.55% of the population.
There were 213 households of which 33.3% had children under the age of 18 living with them, 48.8% were married couples living together, 11.7% had a female householder with no husband present and 35.2% were non-families. 26.8% of all households were made up of individuals and 14.1% had someone living alone who was 65 years of age or older. The average household size was 2.54 and the average family size was 3.16.
26.4% of the population were under the age of 18, 8.1% from 18 to 24, 27.1% from 25 to 44, 26.8% from 45 to 64, and 11.6% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 88.9 males. For every 100 females age 18 and over, there were 89.1 males.
The median household income was $33,333 and the median family income was $50,556. Males had a median income of $32,292 and females $20,875. The per capita income was $16,345. About 6.6% of families and 13.0% of the population were below the poverty line, including 12.9% of those under age 18 and 20.9% of those age 65 or over.