Introduction
South Korean island in the Sea of Japan This article is about the island. For the county of the same name, see Ulleung County. UlleungdoNASA Landsat7 image of Ulleungdo (north oriented at top)Interactive map of UlleungdoGeographyLocationSea of JapanCoordinates37°30′04″N 130°51′23″E / 37.50111°N 130.85639°E / 37.50111; 130.85639Area72.86 km2 (28.13 sq mi)Highest elevation984 m (3228 ft)AdministrationSouth KoreaCountyUlleung CountyProvinceNorth Gyeongsang ProvinceNorth Korea (claimed)CountyT'ongch'ŏn CountyProvinceKangwŏn ProvinceDemographicsPopulation9,191 (Sep 2020.)Pop. density126/km2 (326/sq mi)Ethnic groupsKoreansKorean nameHangul울릉도Hanja鬱陵島RRUlleungdoMRUllŭngdoIPA[uɭːɯŋdo] Ulleungdo (Korean: 울릉도; pronounced [uɭːɯŋdo]), also spelled Ulreungdo, is a South Korean island 120 kilometres (65 nmi; 75 mi) east of the Korean Peninsula in the Sea of Japan. It was formerly known as Dagelet Island or Argonaut Island in Europe. Volcanic in origin, the rocky steep-sided island is the top of a large stratovolcano which rises from the seafloor, reaching a maximum elevation of 984 metres (3,228 ft) at Seonginbong Peak. The island is 9.5 kilometres (6 mi) in length and ten kilometres (6 mi) in width; it has an area of 72.86 km2 (28.13 sq mi). It has a population of 10,426 inhabitants. The island makes up the main part of Ulleung County, North Gyeongsang Province, South Korea, and is a popular tourist destination. The main city of Ulleungdo is the port of Dodong (도동; 道洞), which serves as the main ferry port between Ulleungdo and the South Korean mainland. After tourism, the main economic activity is fishing, including its well-known harvest of squid, which can be seen drying in the sun in many places.