Hong Kong, officially the Hong Kong Special Administrative Region of the People's Republic of China, is a city and a special administrative region in China. With 7.4 million residents of various nationalities in a 1,104-square-kilometre territory…Hong Kong, officially the Hong Kong Special Administrative Region of the People's Republic of China, is a city and a special administrative region in China. With 7.4 million residents of various nationalities in a 1,104-square-kilometre territory, Hong Kong is one of the most densely populated territories in the world.