Jeju is the capital of the Jeju Province in South Korea and the largest city on Jeju Island. The city is served by Jeju International Airport.
Located on an island off the Korean Peninsula, Jeju has mild, warm weather during much of the year. The city is a well-known resort, with prestigious hotels and public casino facilities. In 2011, 9.9 million passengers flew between the two cities of Seoul and Jeju, making the Gimpo–Jeju route the world's busiest passenger air route. Jeju welcomes over ten million visitors every year, mainly from the South Korean mainland, Japan, and China. The population of Jeju City is 486,306 people and 205,386 households. The population density is 470.03.