Population pyramids are diagrams that describe the age and gender distribution of a society.

Population pyramids can be divided into three groups:

• Least developed nations (broad base → high birth rate).
• Developing nations (lower birth rate → the base is not as broad).
• Developed nations (low birth rate, the largest age groups are aging).

Finland is a developed nation. Its population pyramid does not have a broad base due to a low birth rate.

The largest age groups are elderly or in late middle age.

As a result, the Finnish population pyramid does not look like a pyramid at all!