Average age of population | Guinea Bissau – yearly data, chart and table

The average age of population of Guinea Bissau in 2025 amounted to 19.38 years old, which is 1.14% more than in 2024, when it was  19.16 years old. It has been growing in this country for already 13 years in a row. Over the entire period of data from the United Nations Department of Economic and Social Affairs since 1950, this indicator has decreased in 1.05 times. The lowest average age of population was recorded in 1990, when it was 15.90 years old. The highest value was in 1960, when average age of population in Guinea Bissau reached 22.00 years old. The data is sourced from the UN report "World Population Prospects 2024", with the values for 2024 and 2025 being projections.