South Carolina was a founding state of the Confederate States of America. The state's population is aproximately 4,479,800 and ranks 24th among the United States. Columbia, Charleston, and Greenville all area have urbanized area populations between 350,000-500,000, while their metro populations are all over 600,000. The Greenville-Spartanburg-Anderson consolidated statistical area population consists of approximately 1.2 million people. Largest Cities: Columbia, Charleston, Mount Pleasant, Greenville, Summerville and Sumter