Definition of population revolves around three main points which are as follows:
1. Size, distribution and density of population: This shows total number of people (men, women and children) at a given place.
2. Growth and changes in population: This shows growth and reasons of growth in population in a given period.
3. Characteristics and features of population: This shows age groups, gender ratio, literacy rate, occupational composition, health, etc. of population.
