Australia Population Pyramid 2031
Australia in 2031
United Nations projections (medium variant) put the population of Australia at 28,417,794 in 2031. Ten years before, in 2021, the projected population is 25,956,417 — 9.5% lower.
With a projected median age of 40.8 years, Australia would have a youth dependency ratio of 26.5 and an old-age dependency ratio of 31.8 per 100 people of working age. The pyramid is constrictive: cohorts of children are smaller than those of their parents, reflecting low fertility and an ageing population.
Data source: United Nations World Population Prospects, 2024 revision (medium variant) — last updated July 2024.
In 2023 women in Australia had on average 1.50 children, below the replacement level of 2.1.
Source: World Bank World Development Indicators, latest available year.
Life expectancy at birth was 83.1 years in 2023: 85.1 for women and 81.1 for men.
Source: World Bank World Development Indicators, latest available year.
8,097,262 immigrants live in Australia, 30.3% of the population.
| United Kingdom | 1,107,102 |
| India | 876,074 |
| China | 656,264 |
| New Zealand | 588,088 |
| Philippines | 356,833 |
429,374 people born in Australia live in other countries.
| United Kingdom | 124,319 |
| New Zealand | 89,129 |
| Canada | 26,777 |
| Malta | 22,753 |
| Greece | 21,915 |
Source: United Nations International Migrant Stock 2024.
| Country | Population | Median age | Relative size |
|---|---|---|---|
| Australia | 28,417,794 | 40.8 | |
| New Zealand | 5,432,483 | 40.5 |





