er Seoul Metropolitan area increased from approxi- mately 350 persons/m in 1949 to 1,990 persons/km² in 2010. It is one of the highest in the world, except for some city states such as Monaco (18,500 persons/ km²) or Singapore (7,230 persons/km²). Re ecting this trend, Korea’s geographic center of population con- tinues to move towards the Greater Seoul Metropoli- tan area.