As the country with the world's highest population, it is not surprising that the Chinese territory of Macau also has the world's highest population density at 21,081/km². This is followed by the small European city-state of Monaco at 19,256/km², the south-east Asian city-state of Singapore, and the Chinese territory of Hong Kong. It is notable that all three of these locations are regarded as centers of wealth and finance, attracting a population of many high net worth individuals.
Some of the largest countries in the world by land mass have quite low population densities. For example, Russia has a population density of just 8/km², while Canada is even lower at 4/km². The United States of America has a relatively low population density of 35/km² given that it is the country with the third-highest population in the world. In comparison, the two countries with the highest populations – China and India – have population densities of 146/km² and 412/km², respectively.