Tallahatchie County is a county in the U.S. state of Mississippi. At the 2010 census, the population was 15,378. Its county seats are Charleston and Sumner.
According to the U.S. Census Bureau, the county has a total area of 652 square miles (1,690 km), of which 645 square miles (1,670 km) is land and 6.9 square miles (18 km) (1.1%) is water. The county is intersected by the Tallahatchie River.
As of the 2010 United States Census, there were 15,378 people residing in the county. 56.4% were Black or African American, 38.9% White, 0.8% Asian, 0.3% Native American, 0.1% Pacific Islander, 2.4% of some other race and 1.2% of two or more races. 5.6% were Hispanic or Latino (of any race).
As of the census of 2000, there were 14,903 people, 5,263 households, and 3,826 families residing in the county. The population density was 23 people per square mile (9/km²). There were 5,711 housing units at an average density of 9 per square mile (3/km²). The racial makeup of the county was 59.43% Black or African American, 39.62% White, 0.09% Native American, 0.36% Asian, 0.05% from other races, and 0.46% from two or more races. 0.92% of the population were Hispanic or Latino of any race.
There were 5,263 households out of which 34.00% had children under the age of 18 living with them, 43.50% were married couples living together, 23.50% had a female householder with no husband present, and 27.30% were non-families. 24.60% of all households were made up of individuals and 11.60% had someone living alone who was 65 years of age or older. The average household size was 2.81 and the average family size was 3.36.
In the county, the population was spread out with 30.00% under the age of 18, 10.00% from 18 to 24, 25.90% from 25 to 44, 20.90% from 45 to 64, and 13.20% who were 65 years of age or older. The median age was 33 years. For every 100 females there were 87.80 males. For every 100 females age 18 and over, there were 84.40 males.
The median income for a household in the county was $22,229, and the median income for a family was $26,509. Males had a median income of $24,766 versus $18,972 for females. The per capita income for the county was $10,749. About 26.80% of families and 32.20% of the population were below the poverty line, including 43.80% of those under age 18 and 27.80% of those age 65 or over.
Tallahatchie County has the fourth lowest per capita income in Mississippi and the 46th lowest in the United States.