United Kingdom Population Pyramid 2042
United Kingdom in 2042
By 2042, the population of the United Kingdom is expected to reach 74,181,563. That would be 3.2% more than in 2032 (71,868,655).
Half of the population would be younger than 43.3 years, with 14.8% children under 15 and 23.6% aged 65 or older. 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.
The fertility rate of the United Kingdom was 1.56 births per woman in 2023, under the 2.1 needed to replace each generation.
Source: World Bank World Development Indicators, latest available year.
A child born there in 2023 could expect to live 81.2 years on average (83.2 years for girls, 79.4 for boys).
Source: World Bank World Development Indicators, latest available year.
8,730,397 immigrants live in United Kingdom, 12.6% of the population.
| India | 1,044,779 |
| Poland | 902,193 |
| Romania | 713,578 |
| Pakistan | 703,309 |
| Ireland | 360,446 |
4,751,880 people born in United Kingdom live in other countries.
| Australia | 1,107,102 |
| United States of America | 894,789 |
| Canada | 427,526 |
| Spain | 294,986 |
| Ireland | 293,559 |
Source: United Nations International Migrant Stock 2024.
| Country | Population | Median age | Relative size |
|---|---|---|---|
| United Kingdom | 74,181,563 | 43.3 | |
| Sweden | 11,127,418 | 44.8 | |
| Denmark | 6,135,755 | 44.4 | |
| Norway | 5,869,383 | 45.4 | |
| Ireland | 5,863,238 | 42.3 |





