Notes on lesson on Demography |


After completing this lesson, student must be able to:

  • Explain position of world population.
  • Explain the causes of unequal distribution of population in Nepal.
  • Describe the population distribution and growth rate by ecological regions.
  • Classification of population composition.
  • Find the sources of population data.
  • Describe the measures of fertility, mortality and migration.
  • Explain the factors affecting death, birth and migration.
  • Explaining some important measures of population change.


Size of Population

Size of population means number or quantity to have less or more population at a certain place, at a certain time. This note reveals facts on the study of population.

Composition of Population

The distribution of the population according to the characteristics such as age, sex, marital status, socio-economic status (caste, religion, language, occupation, etc.) and so on is called composition of population. This is the note about the classification of population composition.

Sources of Population Data

Population data are the indicators of the various information of population like birth, death, migration, age, sex, marital status, religion, literacy, language, occupation, etc. This is the note about sources of population data.

Demographic Components, Processes and Measures

Demography is the scientific study of human population primarily with respect to size, structure, distribution and change. This is the note about the demographic components, processes, and measures.

Some Important Measures of Population Change

Population Doubling Time is the estimated time taken to double the population. This is the note about the measures of population change.

Measures of Mortality and Migration

Migration is another process of demography that deals with the change in the size and composition of the population by migrating from one place to another. This is the note about the measures of mortality and migration.

Factors Affecting Birth

Birth is an important component mainly related to fertility in the study of population education. This note has information about the factors affecting birth.