Si (city) A
si (, pronounced ) is one of the divisions of a province, along with
gun. 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 as
Suwon,
Cheongju,
Cheonan and
Jeonju) is considered as a specific city, which can set non-autonomous districts (
gu). City with a population of over 1,000,000, it can be promoted to a metropolitan city if the need is recognized. (Not as specified by law but customarily, such as Seoul (1946), Busan (1963), Incheon (1981), Daegu (1981), Gwangju (1986), Daejeon (1989) Ulsan (1997)) An administrative city does not have a city council and the mayor of the city is appointed by the provincial governor. (Jeju-si, Seogwipo-si)
Gun (county) A
gun () is one of the subdivisions of a provincial-level division. A
gun has a population of less than 150,000 (more than that would make it a city or
si), is less densely populated than a
gu, and is more rural in character than either of the other 2 divisions.
Gun are comparable to British
non-metropolitan districts. Counties are divided into towns (
eup) and townships (
myeon). The metropolitan cities of Busan, Daegu, Incheon and Ulsan contain
gun as well due to operating at a provincial level over local, non-urban areas.
Gu (district) A
gu (), or a
district, is a possible division within cities which have more than 500,000 people.
Gu are similar to
boroughs in some Western countries, and a
gu office handles many of the functions that would be handled by the city in other jurisdictions.
Gu are divided into neighborhoods (
dong). ==Submunicipal level divisions==