- 1 decade agoFavorite Answer
Population density is the number of persons per a unit of area, most commonly persons per square mile.
This isn't to be confused with population. There might be 500 persons living in an apartment complex that takes up half a square mile of area. The population density of the apartment complex is 1000 persons per square mile. (500 persons divided by one half mile.)
This may be in contrast to an area of more sparsely distributed homes adjacent to it with only 500 persons per square mile. So, population density is a useful way to compare how crowded (or "dense") one area might be to another.
- ChariotmenderLv 71 decade ago
As the term implies, "population density" refers to the number of people in a defined jurisdiction, in relation to the size of the area that they occupy. Obviously, the population density is higher in urban areas than in rural communities. In the world as a whole, the population density is very high in some nations, such as Singapore and the Netherlands, and very low in others, such as Greenland and Australia (though in Australia the density is quite high in several large cities, while the rest of the continent is sparsely settled). Tables showing the population density of the nations of the world are published by the United Nations Statistical Office. While population density is a useful measure, the proportion of people living in urban areas in relation to the area available to produce food for them might be a more meaningful statistic.
- LizLv 71 decade ago
It's a number that tell you how many people on average are living in a certain area, for example in one square kilometer.
For instance, if a country has a a population of 1 million and and an area of 10000 square kilometers, that means that on average, there are 100 people per square kilometer living in that country.