Population pyramids are bar charts that show how many people of different ages are living in a place or country.
Population pyramids show the bars arranged sideways, rather than upwards. The x-axis shows the number of people, the y-axis shows their ages. The bars on the left show the number of males and the bars on the right show the number of females.
A population pyramid for a developed country is usually bullet-shaped like the one below:
A population pyramid for a developing country is usually triangle-shaped like the one below:
When interpreting a population pyramid, you should include: