Charleston County, South Carolina
Charleston County, South Carolina
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Charleston County, South Carolina

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Charleston County, South Carolina

Charleston County is located in the U.S. state of South Carolina along the Atlantic coast. As of the 2020 census, the population was 408,235, making it the third-most populous county in South Carolina (behind Greenville and Richland counties). Its county seat is Charleston. It is also the largest county in the state by total area, although Horry County has a larger land area. The county was created in 1800 by an act of the South Carolina State Legislature. Charleston County is included in the Charleston-North Charleston, SC Metropolitan Statistical Area. It is in the Lowcountry region of South Carolina.

Charleston County was chartered in 1785 but was quickly dissolved after disputes by the residents about governance. The county was later redrawn in 1798 with the boundary lines taking effect on January 1, 1800. The county seat and largest city in both the county and state is Charleston. Both the county and town was named after King Charles II.

According to the U.S. Census Bureau, the county has a total area of 1,357.99 square miles (3,517.2 km2), of which 917.98 square miles (2,377.6 km2) is land and 440.01 square miles (1,139.6 km2) (32.40%) is water. It is the largest county in South Carolina by total land and water area.

As of the 2020 census, there were 408,235 people, 165,568 households, and 95,785 families residing in the county.

At the 2010 census, there were 350,209 people, 144,309 households, and 85,692 families residing in the county. The population density was 382.3 inhabitants per square mile (147.6/km2). There were 169,984 housing units at an average density of 185.6 units per square mile (71.7 units/km2). The racial makeup of the county was 64.2% white, 29.8% black or African American, 1.3% Asian, 0.3% American Indian, 0.1% Pacific islander, 2.7% from other races, and 1.6% from two or more races. Those of Hispanic or Latino origin made up 5.4% of the population. In terms of claimed ancestry, 11.3% were German, 11.0% were English, 10.2% were Irish, and 9.8% were American.

Of the 144,309 households, 27.8% had children under the age of 18 living with them, 40.5% were married couples living together, 14.7% had a female householder with no husband present, 40.6% were non-families, and 30.1% of all households were made up of individuals. The average household size was 2.36 and the average family size was 2.96. The median age was 35.9 years.

The median income for a household in the county was $48,433 and the median income for a family was $61,525. Males had a median income of $42,569 versus $34,195 for females. The per capita income for the county was $29,401. About 11.5% of families and 16.5% of the population were below the poverty line, including 24.5% of those under age 18 and 10.8% of those age 65 or over.

At the 2000 census, there were 309,969 people, 143,326 households, and 97,448 families residing in the county. The population density was 338 people per square mile (131 people/km2). There were 141,031 housing units at an average density of 154 units per square mile (59 units/km2). The racial makeup of the county was 61.9% White, 34.5% Black or African American, 0.26% Native American, 1.12% Asian, 0.06% Pacific Islander, 0.99% from other races, and 1.16% from two or more races. 2.40% of the population were Hispanic or Latino of any race. 9.6% were of American, 9.5% English, 9.1% German and 7.6% Irish ancestry.

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