Sellers is a town in Marion County, South Carolina, United States. The population was 277 at the 2000 census.Sellers is located at 34°16′57″N 79°28′25″W / 34.282596°N 79.473493°W / 34.282596; -79.473493.According to the United States Census Bureau, the town has a total area of 0.7 square mile, all land.As of the census of 2000, there were 277 people, 111 households, and 65 families residing in the town. The population density was 398.9 people per square mile. There were 127 housing units at an average density of 182.9 per square mile. The racial makeup of the town was 85.56% African American and 14.44% White.There were 111 households out of which 25.2% had children under the age of 18 living with them, 26.1% were married couples living together, 26.1% had a female householder with no husband present, and 41.4% were non-families. 38.7% of all households were made up of individuals and 10.8% had someone living alone who was 65 years of age or older. The average household size was 2.