Stone County is a county located in the U.S. state of Mississippi. As of the 2010 census, the population was 17,786. Its county seat is Wiggins. Stone County was formed from the northern portion of Harrison County on June 5, 1916. The county was named for John M. Stone, who served as Governor of Mississippi from 1876 to 1882 and again from 1890 to 1896.
According to the U.S. Census Bureau, the county has a total area of 448 square miles (1,160 km), of which 445 square miles (1,150 km) is land and 2.6 square miles (6.7 km) (0.6%) is water.
As of the census of 2010, there were 17,786 people, 6,165 households, and 4,539 families residing in the county. The population density was 39.9 people per square mile (15.33/km²). There were 7,161 housing units at an average density of 16 per square mile (6/km²). The racial makeup of the county was 78.6% White, 19.1% Black or African American, with 2.3% being of other racial categories. 1.3% of the population were Hispanic or Latino of any race.
31.5% of households had children under the age of 18 living with them, 54.5% were married couples living together, 14.4% had a female householder with no husband present, 4.7% had a male household with no wife present, and 26.4% were non-families. 22.5% of all households were made up of individuals and 8.6% had someone living alone who was 65 years of age or older. The average household size was 2.68 and the average family size was 3.13.
24.4% were under the age of 18, 29.4% were under the age of 20, 32.3% from 20 to 44, 26.1% from 45 to 64, and 11.9% were 65 years of age or older. The median age was 35.9 years. 50.1% of the population was male, and 49.9% was female.
The median income for a household in the county was $42,862, and the median family income was $48,083. Males had a median income of $42,773 versus $31,000 for females. The per capita income for the county was $21,806. About 14.1% of families and 18.2% of the population were below the poverty line, including 24.9% of those under age 18 and 11.5% of those age 65 or over.