[3][4] A dong is, usually, the smallest level of urban-area division to have its own office and staff in South Korea.
Administrative neighborhood, however, is defined by local governments to make an office (community center).
In usual cases, an administrative neighborhood is set by population of the area to match demands for the civil services.
Some dong are subdivided into ga (가/街), which are not a separate level of government but only exist for use in addresses.
[8] The narrowest legal-status dong is Sangdeok-dong in Jung District, Daegu Metropolitan City, with an area of 2,971m2 (0.003km2).