à ¬nsan County is a kun (county) in South P'yà Ângan province, North Korea.
The name Unsan is proposed to have been derived from either the Chinese character é¶ or éÂÂ, both read as "un" in Korean, referring to the possibility of silver being mined in a mine located in Sinchang, or 'hidden', as the area is surrounded by mountains, such as Hwasan. However, in historical records, only the word æ®· has been recorded as a name.
Hungdok-gun, the predecessor to the current administrative division, was formed in the early Goguryeo period from Sunchon-gun. This later became Unju in 983 and subsequently Unsan-hyon in 1278. In 1414, after the establishment of the Joseon, it was briefly absorbed into Chasan-gun, then reestablished in 1415. In 1895, the myon was reorganised into a gun and subsequently was changed into a hyon in 1896. It was again absorbed into Sunchon-gun in 1907 and reestablished in 1952.
In 1954, the original Unsan-up and Suwon-ri were merged and renamed to Sinchang-ri, while parts of Jinsan-ri and Sonam-ri became the new Unsan-up.
In 1974, several dongs were promoted to rodongjagu amongst a large scale reorganisation of districts, with some districts joining Sunchon.
In 1994, Sinpyong-ri was transferred to Pukchang County.
By the 1990s, Kubong-rodongjagu had been developed into a large mining town, with over 4600 residences and various services, such as hospitals, culture halls and schools.
à ¬nsan county is divided into 1 à Âp (town), 5 rodongjagu (workers' districts) and 16 ri (villages):
à ¬nsan County is served by the P'yà Ângra and à ¬nsan lines of the Korean State Railway.
A trolleybuses existed in Kubong-rodongjagu, serving the Ryongdae Mine. This line had a stated length of 10-ri with 4 stops, connecting the workers' district to the entrance 2nd pit of Ryongdae Mine. Services run 24 hours a day, 7 days a week.