Seoul (서울; Korean: [sʰʌ.ul]) – officially the Seoul Special City – is the capital and largest metropolis of South Korea, forming the heart of the Seoul Capital Area, which includes the surrounding Incheon metropolis and Gyeonggi province, the world's second largest metropolitan area with over 25.6 million people. It is home to over half of all South Koreans along with 678,102 international residents.