Seoul is the capital and largest city of South Korea. With a population of over 10 million, it is one of the world's largest cities. The Seoul National Capital Area - which includes the major port city of Incheon and satellite towns in Gyeonggi-do, has 24.5 million inhabitants and is the world's second largest metropolitan area. Almost half of South Korea's population live in the Seoul National Capital Area, and nearly a quarter in Seoul itself, making it the country's chief economic, political and cultural center. As a Special City, Seoul is administered directly by the national government and is divided into 25 major districts.