The top tier of administrative divisions are the provincial-level divisions, of which there are several types: provinces (including special self-governing provinces), metropolitan cities, special cities, and special self-governing cities. Thegovernors of the provincial-level divisions are elected every four years.[2]
Asi (시; 市, pronounced[ɕi]) is one of the divisions of a province, along withgun. A city must have a neighborhood(dong) and can have towns(eup), townships(myeon) if the city is combined with urban and rural areas. Once an eup of a county (gun) attains a population of 50,000, the county can become a city. A city with a population of over 500,000 (such asSuwon,Cheongju,Cheonan andJeonju) is considered as a specific city, which can set non-autonomous districts(gu). An administrative city does not have a city council and the mayor of the city is appointed by the provincial governor.
Agun (군; 郡) is one of the divisions of a province (along withsi), and of the metropolitan cities ofBusan,Daegu,Incheon andUlsan (along withgu). Agun has a population of less than 150,000 (more than that would make it a city orsi), is less densely populated than agu, and is more rural in character than either of the other 2 divisions.Gun are comparable to Britishnon-metropolitan districts. Counties are divided into towns (eup) and townships (myeon). Specially, the size of a "gun" is less than a US "county".
Agu (구; 區) is equivalent todistrict in the West. The metropolitan cities of Busan, Daegu, Incheon and Ulsan containgun as well.Gu are similar toboroughs in some Western countries, and agu office handles many of the functions that would be handled by the city in other jurisdictions.Gu are divided into neighborhoods (dong).
Aneup (읍; 邑) is similar to the unit of town. Along withmyeon, aneup is one of the divisions of a county (gun), and of some cities (si) with a population of less than 500,000. The main town or towns in a county—or the secondary town or towns within a city's territory—are designated aseup. Towns are subdivided into villages (ri). In order to form aneup, the minimum population required is 20,000.
Amyeon (면; 面) is one of the divisions – along witheup – of a county (gun) and some cities (si) of fewer than 500,000 population.Myeons have smaller populations thaneups and represent the rural areas of a county or city.Myeons are subdivided into villages (ri). The minimum population limit is 6,000.
Adong (동; 洞) is the primary division of districts (gu), and of those cities (si) which are not divided into districts. Thedong is the smallest level of urban government to have its own office and staff. In some cases, a single legaldong is divided into several administrativedong. Administrativedong are usually distinguished from one another by number (as in the case ofMyeongjang 1-dong and Myeongjang 2-dong). In such cases, each administrativedong has its own office and staff.
The primary division of adong is thetong (통; 統), but divisions at this level and below are seldom used in daily life.[6] Some populousdong are subdivided intoga (가; 街), which are not a separate level of government, but only exist for use in addresses. Many major thoroughfares in Seoul, Suwon, and other cities are also subdivided intoga.[7]
Ari (리; 里) is the only division of towns (eup) and townships (myeon). Theri is the smallest level of rural government to contain any significant number of people.[8]
Although the details of local administration have changed over time, the basic outline of the current three-tiered system was implemented under the reign ofGojong in 1895. A similar system also remains in use inNorth Korea.