The population which resides on earth’s surface shows variations on regional basis due to being controlled by various factors. 

This unequal distribution of population found in the world has been explained through the following points:

1. World’s two – third population resides on its approximately 14 per cent part. According to another estimate, almost 57 per cent population of the world resides on its 5 per cent land part.

2. World’s two – third part is almost desolate. Only 10% population resides on 90% part. Centralisation of 90% of population is thereon 10% land part.

3. 85% population of the world is found in the Northern Hemisphere and 15% population is found in the southern hemisphere.

4. Around three – fourth of world population lives in Asia and Europe continents. More than 60% population of the world lives in the Asian continent. Only half per cent of World Population resides in Oceania.

5. Around 80% population of the world lives between 20° to 60° northern latitudes. Less than 1% of world population resides in the north of 60° latitude.

6. Around 75% part of world population is settled on the edges of the continents. Centralisation of population declines towards the central parts of the continents.

7. Around 80% of world population resides in regions situated at upto the height of 500 m from sea level.

It is dear from the above fact that many extremely large regions of the world are sparsely populated, while certain relatively smaller regions are excessively densely populated.