Canada Website Population density is made up of two variables. These are the number of people, and the size of the area.
Population density provides a useful means for comparing population distribution .
Densities vary considerably over the globe. The location of people within an area. Areas may be compared by looking at variations in population density. Population is unevenly distributed for a number of reasons. At the other extreme, urban areas such as Mong Kok in Hong Kong may have as many as 160,000 people living in one square kilometre.