The World: Population - Age 40-44 (2025) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 28. | Ukraine | 3,422,498 | 2025 (Est.) | |
| 27. | Algeria | 3,522,816 | 2025 (Est.) | |
| 26. | Spain | 3,713,856 | 2025 (Est.) | |
| 25. | South Korea | 3,742,991 | 2025 (Est.) | |
| 24. | Italy | 4,053,247 | 2025 (Est.) | |
| 23. | France | 4,240,359 | 2025 (Est.) | |
| 22. | United Kingdom | 4,373,461 | 2025 (Est.) | |
| 21. | Myanmar | 4,644,235 | 2025 (Est.) | |
| 20. | Democratic Republic of the Congo | 4,794,953 | 2025 (Est.) | |
| 19. | Germany | 4,880,921 | 2025 (Est.) | |
| 18. | Thailand | 5,156,916 | 2025 (Est.) | |
| 17. | Ethiopia | 6,060,596 | 2025 (Est.) | |
| 16. | Turkey | 6,889,685 | 2025 (Est.) | |
| 15. | Japan | 7,433,305 | 2025 (Est.) | |
| 14. | Egypt | 7,546,062 | 2025 (Est.) | |
| 13. | Philippines | 8,094,883 | 2025 (Est.) | |
| 12. | Iran | 8,239,738 | 2025 (Est.) | |
| 11. | Vietnam | 8,308,670 | 2025 (Est.) | |
| 10. | Mexico | 8,690,424 | 2025 (Est.) | |
| 9. | Russia | 10,640,602 | 2025 (Est.) | |
| 8. | Nigeria | 10,915,536 | 2025 (Est.) | |
| 7. | Bangladesh | 13,476,293 | 2025 (Est.) | |
| 6. | Pakistan | 14,423,510 | 2025 (Est.) | |
| 5. | Brazil | 16,770,561 | 2025 (Est.) | |
| 4. | Indonesia | 19,666,284 | 2025 (Est.) | |
| 3. | United States of America | 22,397,720 | 2025 (Est.) | |
| 2. | India | 95,275,352 | 2025 (Est.) | |
| 1. | China | 98,838,528 | 2025 (Est.) |
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