Barnwell County, South Carolina

Barnwell County, South Carolina
County	Barnwell County
State	South Carolina
Founded	1798
Seat	Barnwell
Largest city	Barnwell
Area total sq mi	557
Area land sq mi	548
Area water sq mi	8.7
Area percentage	1.6%
Population as of	2020
Population total	20785
Population density sq mi	37.9
Time zone	Eastern
District	2nd
Named for	John Barnwell

Barnwell County, South Carolina is a county located in the U.S. state of South Carolina. As of the 2020 United States census, its population was 20,785. Its county seat and largest community is Barnwell. The county was formed in 1798 from portions of the Orangeburg District and the Ninety-Six District.

History

The area was originally inhabited by indigenous peoples, including the Edisto and Savannah River tribes, before European colonization. It was part of the Colony of Carolina and later saw settlement during the American Revolution. The county is named for John Barnwell, an early settler and military leader during the Yamasee War. During the antebellum period, the economy was dominated by plantation agriculture, primarily cotton, reliant on enslaved labor. The American Civil War deeply impacted the region, with local troops serving in regiments like the Hampton's Legion. In the 20th century, the establishment of the Savannah River Site by the Atomic Energy Commission in 1950 became a defining event, displacing several communities and shifting the local economy toward nuclear research and federal employment. The county was also a site of significant African-American political activity during Reconstruction, with figures like Robert B. Elliott representing the area.

Geography

According to the United States Census Bureau, the county has a total area of 557 square miles, of which 548 square miles is land and 8.7 square miles is water. It is situated in the Atlantic coastal plain region of the state. The primary waterway is the Salkehatchie River, which flows through the western part of the county. The county is bordered by Aiken County to the north, Orangeburg County to the east, Bamberg County to the southeast, Allendale County to the south, and Hampton County to the southwest. A significant portion of the county's western border is occupied by the Savannah River Site.

Demographics

At the 2020 United States census, there were 20,785 people and 8,295 households in the county. The racial and ethnic composition was approximately 55.5% White, 40.1% Black or African American, 1.2% American Indian, 0.5% Asian, and 2.7% identifying as two or more races. Hispanic or Latino of any race made up 3.3% of the population. The median household income was $41,190, and about 20.8% of the population lived below the poverty line.

Government and infrastructure

Barnwell County operates under a council-administrator form of government. The county is part of the Second Congressional District, represented in the U.S. House by Joe Wilson. Key infrastructure includes the Barnwell County Airport and several state highways, including SC 3, SC 64, and SC 78. The county is served by the Barnwell County Detention Center and the Barnwell County Courthouse. A major feature is the Barnwell Low-Level Waste Facility, a commercial disposal site for radioactive waste.

Economy

Historically dependent on agriculture, particularly tobacco and timber, the modern economy is heavily influenced by the presence of the Savannah River Site, which employs many residents in scientific, engineering, and security roles. Other significant employers include Shaw AREVA MOX Services (now Orano) and various contractors supporting the federal site. Manufacturing, retail trade, and healthcare also contribute to the economy. The county is part of the Salkehatchie Region economic development alliance.

Education

Public education is administered by the Barnwell County Consolidated School District, which includes Barnwell High School. The county is also served by the Barnwell County Career Center for vocational training. Higher education opportunities are provided nearby by the University of South Carolina Salkehatchie campus in Allendale. The county library system is anchored by the Barnwell County Public Library in Barnwell.

Communities

* Cities: Barnwell * Towns: Blackville, Elko, Hilda, Kline, Snelling, Williston * Unincorporated communities: Dunbarton, Four Mile, Meyer's Mill, Rivers Bridge * Census-designated place: Barnwell * Defunct communities: Several, such as Dunbarton, were largely displaced by the creation of the Savannah River Site.

Category:Barnwell County, South Carolina Category:1798 establishments in South Carolina Category:Counties of the Atlantic coastal plain