Columbia metropolitan area, South Carolina in the context of Kershaw County, South Carolina

Columbia is the capital city of the U.S. state of South Carolina. It is the second-most populous city in the state, with a population of 136,632 at the 2020 census, while the Columbia metropolitan area has an estimated 870,000 residents. The city serves as the county seat of Richland County, and portions of the city extend into neighboring Lexington County and Kershaw County. The name "Columbia", a poetic term referring to the U.S., derives from the name of Christopher Columbus, who explored the Caribbean on behalf of the Spanish Empire. The name of the city is often abbreviated as "Cola", leading to its nickname "Soda City".

The city, located just northwest of the geographic center of South Carolina, was the center of population of South Carolina as of 2020. It is also the primary city of the Midlands region of the state. It lies at the confluence of the Saluda River and the Broad River, which merge at Columbia to form the Congaree River. As the state capital, Columbia is the site of the South Carolina State House, the center of government for the state. In 1860, the South Carolina Secession Convention took place in Columbia; delegates voted for secession, making South Carolina the first state to leave the Union in the events leading up to the Civil War.

Richland County is a county located in the U.S. state of South Carolina. As of the 2020 census, its population was 416,147, making it the second-most populous county in South Carolina, behind only Greenville County. The county seat and largest community is Columbia, the state capital. The county was established on March 12, 1785. Richland County is part of the Columbia, SC Metropolitan Statistical Area. In 2020, the center of population of South Carolina was located in Richland County, in the city of Columbia. The county is also the location of the geographic center of South Carolina, southeast of Columbia.It is located in the Midlands region of South Carolina.

Lexington County is a county located in the U.S. state of South Carolina. As of the 2020 census, the population was 293,991. Its county seat and largest community is Lexington. The county was chartered in 1785 and was named in commemoration of Lexington, Massachusetts, the site of the Battle of Lexington in the American Revolutionary War. Lexington County is the sixth-most populous county in South Carolina by population and is part of the Columbia, SC Metropolitan Statistical Area. It is located in the Midlands region of South Carolina.