Macau, the administrative region in China, is one of the most densely populated countries worldwide, with a population density of 21,892 people per square kilometre.
With a population density of 19,316 people per square kilometre, this small principality on the French Riviera has one of the highest population densities due to the small land and wealthy residents.
Singapore, situated at the southern tip of the Malay Peninsula, has a population density of 8,123 people per square kilometre
Hong Kong has a population density of 7,062 people per square kilometre. One of the reasons for Hong Kong's high density is the high price of land.
Gibraltar, located at the southern tip of the Iberian Peninsula, has a population density of 5,784 people per square kilometre.