South Carolina is a constituent state of the United States of America. It lies on the southern Eastern Seaboard of the United States. Shaped like an inverted triangle with an east-west base of 285 miles (459 km) and a north-south extent of about 225 miles (360 km), the state is bounded on the north by North Carolina, on the southeast by the Atlantic Ocean, and on the southwest by Georgia. Columbia, located in the centre of the state, is the capital and largest city.