The city of Lancaster () is the county seat of Lancaster County, South Carolina, United States, located in the Charlotte Metropolitan Area. As of the United States Census of 2018, the city population was 9,175 but due to South Carolina's strict annexation laws its actual population is well over twenty thousand people. The city was named after the famous House of Lancaster.
The following are listed on the National Register of Historic Places:
Lancaster is located at 34°43′16″N 80°46′24″W (34.721100, -80.773315).
According to the United States Census Bureau, the city has a total area of 5.9 square miles (15 km2), of which 5.8 square miles (15 km2) is land and 0.1 square miles (0.26 km2) (1.36%) is water.
As of the census of 2010, there were 10,160 people, 5,396 households, and 3,115 families residing in the city. The population density was 1,406.2 people per square mile (543.4/km2). There were 3,778 housing units at an average density of 649.7 per square mile (251.1/km2). The racial makeup of the city was 49.49% African American, 47.54% White, 0.12% Native American, 0.88% Asian, 0.04% Pacific Islander, 1.15% from other races, and 0.78% from two or more races. Hispanic or Latino of any race were 2.25% of the population.
There were 3,396 households, out of which 27.3% had children under the age of 18 living with them, 35.5% were married couples living together, 22.6% had a female householder with no husband present, and 37.7% were non-families.