The population of the world is unevenly distributed. Broadly, 90 percent of the world population lives in about 10 per cent of its land area, while only 10 percent of its land area, while only 10 percent of her world population distributed over 90 percent of its land area. Again, it is found that more than 90 percent of the world's population lives in northern hemisphere while only 10 percent of her population live in the southern hemisphere. Again, more than 60 percent of the total population of the northern hemisphere concentrated within the tropical areas..

Continent-wise distribution of the population is also very uneven. Out of the total world's population, the percentage of population of the various continents are as follows:

The 10 most populous countries of the world contribute about 60 percent of the world's population. Of these 10 countries 6 are located in Asia (China, India, Indonesia, Pakistan, Bangladesh and Japan). In other words the distribution of population of the world are very uneven.

There are so many factors are responsible for the uneven distribution of population of the world.

These factors are categories as follows:

(a) Geographical factors:

(i) Availability of water.

(ii) Landforms.

(iii) Climate.

(iv) Soils.

(b) Economic factors:

(i) Minerals.

(ii) Urbanisation.

(iii) Industrialization.

(c) Social and cultural factors: From density point of view, the density of the world’s population are highly variable. The average density of the population in the world is 45.5 (46) persons per sq. km.