Population composition means measurable characteristics of the population that helps us to distinguish from one group of people to another.
Population composition is the study within population geography, with a vast coverage of the analysis of sex, age, place of residence, ethnic characteristic, tribes, language, religion, marital status, education, occupational characteristics, etc.
The important components, which reflect the population composition are— age, sex, place of residence, literacy, occupation, etc.
Sex composition is an important demographic characteristic. It is generally expressed as the ratio of males to females in a population.
Age structure represents the number of people of different age groups. It is an important indicator of the population composition.
The division of population into rural and urban is based on the residence.
The proportion of literate population of a country is an indicator of its socio-economic developments.
Occupational structure is the working population in the age group of 15 to 59 years. Occupational structure is an indicator of the level of economic development of a nation. It includes the various sectors. These are primary activities, secondary activities, tertiary activities, and quaternary activities.
Thus, population composition affects the life of the people of a society, of an economy of a nation, and helps in planning the future development of any country.