Chickasaw County is a county located in the U.S. state of Mississippi. As of the 2010 census, the population was 17,392. Its county seats are Houston and Okolona. The county is named for the Chickasaw people, who lived in this area for hundreds of years. Most were removed to Indian Territory in the 1830s, but some remained and became citizens of the state and United States.
According to the U.S. Census Bureau, the county has a total area of 504 square miles (1,310 km), of which 502 square miles (1,300 km) is land and 2.5 square miles (6.5 km) (0.5%) is water.
As of the 2010 United States Census, there were 17,392 people residing in the county. 54.0% were White, 42.1% Black or African American, 0.3% Asian, 0.1% Native American, 2.5% of some other race and 1.0% of two or more races. 3.7% were Hispanic or Latino (of any race).
As of the census of 2000, there were 19,440 people, 7,253 households, and 5,287 families residing in the county. The population density was 39 people per square mile (15/km²). There were 7,981 housing units at an average density of 16 per square mile (6/km²). The racial makeup of the county was 56.89% White, 41.26% Black or African American, 0.19% Native American, 0.17% Asian, 0.04% Pacific Islander, 0.99% from other races, and 0.46% from two or more races. 2.29% of the population were Hispanic or Latino of any race.
According to the census of 2000, the largest ancestry groups in Chickasaw County were English 44.1%, African 41% and Scots-Irish 13.5%.
There were 7,253 households out of which 36.30% had children under the age of 18 living with them, 50.80% were married couples living together, 18.00% had a female householder with no husband present, and 27.10% were non-families. 24.90% of all households were made up of individuals and 11.90% had someone living alone who was 65 years of age or older. The average household size was 2.65 and the average family size was 3.17.
In the county, the population was spread out with 28.60% under the age of 18, 9.30% from 18 to 24, 27.60% from 25 to 44, 21.00% from 45 to 64, and 13.50% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 92.60 males. For every 100 females age 18 and over, there were 87.40 males.
The median income for a household in the county was $26,364, and the median income for a family was $33,819. Males had a median income of $25,459 versus $20,099 for females. The per capita income for the county was $13,279. About 16.80% of families and 20.00% of the population were below the poverty line, including 23.90% of those under age 18 and 22.40% of those age 65 or over.