Introduction
City in Gyeonggi, South Korea For other uses, see Ansan (disambiguation). Specific city in Gyeonggi Province, South KoreaAnsan 안산시Specific cityKorean transcription(s) • Hangul안산시 • Hanja安山市 • Revised RomanizationAnsan-si • McCune–ReischauerAnsan-siAnsan Culture SquareAnsan Reed Marshy ParkChoi Yongshin Memorial HallAnsan Lake ParkHanyang University ERICA campus FlagEmblem of AnsanLocation in South KoreaCoordinates: 37°19′0″N 126°50′0″E / 37.31667°N 126.83333°E / 37.31667; 126.83333Country South KoreaRegionGyeonggi Province (Sudogwon)First mention940City status1986Administrative divisions2 gu, 25 dongGovernment • MayorLee Min-Geun(People Power Party)Area • Total149.39 km2 (57.68 sq mi)Elevation9 m (30 ft)Population (july 2025) • Total614,772 • Density4,115.2/km2 (10,658/sq mi) • DialectSeoulPostal code425020-426910Area code(+82) 31BirdChinese egretFlowerRoseTreeGinkgoWebsiteansan.go.kr Ansan (Korean: 안산, Korean pronunciation: [an.san]) is a city in Gyeonggi Province, South Korea. It lies southwest of Seoul and is part of the Seoul Metropolitan Area. It is connected to Seoul by rail via Seoul Subway Line 4. It is situated on the Yellow Sea coast and some islands lie within its jurisdiction. The largest and best-known of these is Daebu Island. Several higher learning institutions are located in Ansan. They include Ansan University, Shin Ansan University, the ERICA campus of Hanyang University, and the Seoul Institute of the Arts. The Korea Transportation Safety Authority, a government agency, has also been headquartered in Ansan since June 3, 2002. With its high number of foreign workers, Wongokbon-dong has been designated as a multicultural area. In 2021, Ansan was selected as the largest residential area for foreigners and it is seeking designation as a special multicultural city. Street play festival is held every year in Ansan.