Allendale County is a county located in the state of South Carolina. As of the 2000 census, its population is 11,211. Its county seat is Allendale6.
According to the U.S. Census Bureau, the county has a total area of 1,069 km˛ (413 mi˛). 1,057 km˛ (408 mi˛) of it is land and 11 km˛ (4 mi˛) of it is water. The total area is 1.06% water.
The Savannah River forms the county's western border with Georgia.
Allendale County is the location of the Topper Site, an archeological excavation providing possible evidence of a pre-Clovis culture dating back 50,000 years. The site is near a source of chert on private land in Martin owned by Clariant Corporation, a Swiss chemical company with a plant there. The site, named after John Topper, a local resident who discovered it, has been under excavation by archeologists from the University of South Carolina for about one month a year since 1999, after an initial exploratory dig in the mid-1980s.
As of the census2 of 2000, there are 11,211 people, 3,915 households, and 2,615 families residing in the county. The population density is 11/km˛ (28/mi˛). There are 4,568 housing units at an average density of 4/km˛ (11/mi˛). The racial makeup of the county is 71.00% Black or African American, 27.37% White, 0.12% Asian, 0.09% Native American, 0.06% Pacific Islander, 0.85% from other races, and 0.51% from two or more races. 1.61% of the population are Hispanic or Latino of any race.
There are 3,915 households out of which 30.30% have children under the age of 18 living with them, 35.80% are married couples living together, 25.80% have a female householder with no husband present, and 33.20% are non-families. 30.00% of all households are made up of individuals and 12.30% have someone living alone who is 65 years of age or older. The average household size is 2.56 and the average family size is 3.21.
In the county, the population is spread out with 26.6% under the age of 18, 9.8% from 18 to 24, 28.2% from 25 to 44, 22.8% from 45 to 64, and 12.7% who are 65 years of age or older. The median age is 35 years. For every 100 females there are 108.6 males. For every 100 females age 18 and over, there are 107.5 males.
The median income for a household in the county is $20,898, and the median income for a family is $27,348. Males have a median income of $25,930 versus $20,318 for females. The per capita income for the county is $11,293. 34.50% of the population and 28.40% of families are below the poverty line. Out of the total population, 48.10% of those under the age of 18 and 26.00% of those 65 and older are living below the poverty line.
Cities and towns