Allendale is a town in Allendale County, South Carolina. The population was 3,482 at the 2010 census, a decline from 4,052 in 2000. It is the county seat of Allendale County. According to the United States Census Bureau, the town has a total area of 3.3 square miles , all land. As of the census of 2000, there were 4,052 people, 1,542 households, and 997 families residing in the town. The population density was 1,225.2 people per square mile . There were 1,763 housing units at an average density of 533.1 per square mile . The racial makeup of the town was 18.19% White, 80.03% African American,... 0.17% Asian, 0.17% Pacific Islander, 0.96% from other races, and 0.47% from two or more races. Hispanic or Latino of any race were 2.25% of the population. There were 1,542 households out of which 32.2% had children under the age of 18 living with them, 29.2% were married couples living together, 31.4% had a female householder with no husband present, and 35.3% were non-families. 31.4% of all households were made up of individuals and 11.9% had someone living alone who was 65 years of age or older. The average household size was 2.
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| County: | Allendale County |
| State: | South Carolina |
| Country: | United States of America |
| Population: | 3,554 |
| Area: | 3.3 sq. mi. |
| Time zone: | North American Eastern Time Zone |
| Also known as: | Allendale, South Carolina, Allendale County / Allendale town |