The urban system within the Korean peninsula has developed separately between South and North Korea. This paper intends to investigate general characteristics of the Korean urban system development from a systems perspective by dividing attributes, linkages, hierarchical structure, and urban system change. The Korean urban development is characterized by metropolitanization, conurbation, emergence of new industrial cities (towns) and satellite cities, and stagnation of small cities. The polarized patterns of population distributions on Seoul and Pusan have been alleviated towards the growth of medium sized and provincial regional centers, which can be identified in the linkage structure. Although Seoul and Pusan is still too powerful in the Korean urban system, regional centers and medium sized cities have gained their own power in the urban system. The next urban system is expected to be under influence of globalization, unification, and other socio-environmental changes in the way of enhancing interdependence.