Qinhuangdao is a port city on the coast of China in northern Hebei. It is administratively a prefecture-level city, about 300 km east of Beijing, on the Bohai Sea, the innermost gulf of the Yellow Sea. Its population during the 2010 national census was 2,987,605, with 1,546,743 people living in the built-up area made up of 4 urban districts.