4,005,015 is the population of the metro region of Cape Town . The demonym of the city Cape Town is Capetonian . 1,100/sq km  (2,800/sq mi) is the density of people in Cape Town . 1,600/sq km  (4,200/sq mi) is the density of people in  the metro region of Cape Town . The population of Cape Town is 433,688
There are more than 1158 residents per sq km in Cape Town