The purpose of the development of new cities in the South Korean capital region is to meet rising housing demand connected to population growth. This new cities capital region development gave big influence to movement of population. That has made scattered population from Seoul to the outer fence through activating movement of population in capital region. So high-population density was made a wide area in capital region. This phenomenon shows different changing population density by the geographical convenience new cities. The area including new cities that connects the former city area showed the increasing of population density rapidly then decrease in period of stability but increase again afterwards. But in comparison with the area including new cities which is the local independent showed to increasing slowly.
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