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Population age structures are becoming more uneven. While the share of elderly in the population is increasing globally, in many countries the share of youth cohorts is still the largest. Different levels of immigration and emigration can deepen, offset, or even reverse population decline in the short term. High-income countries are ageing and this trend is becoming increasingly relevant in middle-income countries too. Africa is expected to account for the largest share of the world's youth cohorts in the future. Alongside fertility and mortality, the size and structure of populations is also importantly influenced by immigration and emigration. Without it the EU population would be shrinking overall.

Age structures more uneven

KEY TRENDS

Age structures more uneven