Least developed countries Population Pyramid 2025
Year
2025Least developed countries in 2025
As of 2025, Least developed countries counted 1,215,537,741 inhabitants. That is 26.3% more than in 2015, when the population stood at 962,708,547.
The median age was 20.6 years, and for every 100 people of working age (15–64) there were 66.5 children under 15 and 6.7 people aged 65 or over. The pyramid is expansive: its wide base of young cohorts reflects high fertility and a rapidly growing population.
Data source: United Nations World Population Prospects, 2024 revision (medium variant) — last updated July 2024.
In 2023 women in Least developed countries had on average 3.96 children, above the replacement level of 2.1.
Source: World Bank World Development Indicators, latest available year.
Life expectancy at birth was 66.5 years in 2023: 68.9 for women and 64.2 for men.
Source: World Bank World Development Indicators, latest available year.
17,864,207 immigrants live in Least developed countries.
| South Sudan | 2,983,086 |
| Sudan | 1,969,726 |
| D.R. Congo | 1,515,486 |
| Myanmar | 1,249,963 |
| Côte d'Ivoire | 878,536 |
55,053,157 people born in Least developed countries live in other countries.
| Saudi Arabia | 6,100,861 |
| Iran | 3,752,317 |
| India | 3,111,262 |
| Côte d'Ivoire | 2,653,043 |
| United States of America | 2,530,746 |





