The Vatican, with an area of 0.4 km², has a population of 1,000, resulting in a population density of 2,272.73 people per km².

Monaco, covering an area of 2.0 km², is home to 36,686 individuals, resulting in a population density of 18,161.39 people per km².

Gibraltar, with an area of 6.8 km², has a population of 32,669, resulting in a population density of 4,804.26 people per km².

Tokelau, covering an area of 12.2 km², has a population of 1,647, resulting in a population density of 135.00 people per km².

The Cocos Islands, with an area of 14.2 km², have a population of 596, resulting in a population density of 41.97 people per km².

Saint Barthelemy covers an area of 21.0 km² and has a population of 7,103, resulting in a population density of 338.24 people per km².

Nauru, with an area of 21.1 km², has a population of 12,511, resulting in a population density of 592.94 people per km².

Tuvalu covers an area of 26.0 km² and has a population of 11,204, resulting in a population density of 430.92 people per km².

Macao, with an area of 30.4 km², has a population of 686,607, resulting in a population density of 22,585.76 people per km².

Saint Martin covers an area of 34.0 km² and has a population of 42,846, resulting in a population density of 1,260.18 people per km².