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East Asia is a sub region of Asia. It covers about 6,640,000 km², or 15 percent of the continent. More than 1,500 million people, or about 40 per cent of all Asians and a quarter of all the people in the world, live in East Asia. The region is one of the world's most crowded places. The population density of East Asia, 230 per km², is over five times the world average.