Summerville is a suburban town in the U.S. state of South Carolina situated mostly in Dorchester County with small portions in Berkeley, and Charleston counties. It is part of the Charleston-North Charleston-Summerville Metropolitan Statistical Area as designated for statistical purposes by the U.S. Office of Management and Budget (OMB). The U.S. Census Bureau population of the Town of Summerville was 43,392 as of the 2010 census.
According to the United States Census Bureau, the town has a total area of 15.4 square miles (39.8 km²), all land.
As of the census of 2000, there were 27,752 people, 10,391 households, and 7,523 families residing in the town. The population density of Summerville is 1,806.7 inhabitants per square mile (697.6/km²). There are 11,087 housing units at an average density of 721.8 per square mile (278.7/km²). The racial makeup of the town was 77.19% White, 19.38% Black or African American, 0.46% Native American, 0.89% Asian, 0.06% Pacific Islander, 0.67% from other races, and 1.34% from two or more races. Hispanic or Latino of any race were 1.97% of the population.