Hong Kong is one of the world's most significant centers.
Hong Kong . With a total land area of 1,106 km2 and a population of over 7.3 million of various nationalities , it ranks as the world 's fourth most densely populated sovereign state or territory . Hong Kong is one of the world 's most significant financial centres , with the highest Financial Development Index score and consistently ranks as the world 's most competitive and freest economic entity .