1. Fertility – the incidence of childbearing in a country's populationa.
Crude birth rate, the number of live births in a given year for every 1,000 people in a population
2. Mortality – the number of deaths in a given year for every 1,000 people in a population
Crude death rate- number of deaths in a given year for every 1,000 people in a population
Infant mortality rate – the number of death among infants under one year of age for each 1,000 live births in a given year
Life expectancy – the average span of a country's population
3. Migration – the movement of people into and out of a specified territory
In-migration rate movement into a territory calculated as the number of people entering an area for every 1,000 people in a population
Out-migration rate movement out of a territory calcuated as the number of people leaving an area for every 1,000 people in a population
4. Population growth – the size of a society's populationa.
To calculate population growth, demographers subtract the crude death rate from the crude birth rate
5. Population composition- the makeup of a society's population at a given point in time
Sex ratio- the number of males for every 100 females in a nation's population
Age-sex pyramid- a graphic representation of the age and sex of the population