The World: Population - Age 0-4 (2018) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 28. | Iraq | 4,197,568 | 2018 | |
| 27. | Madagascar | 4,229,418 | 2018 | |
| 26. | South Africa | 4,311,640 | 2018 | |
| 25. | Mozambique | 4,538,469 | 2018 | |
| 24. | Myanmar | 4,934,023 | 2018 | |
| 23. | Japan | 4,973,882 | 2018 | |
| 22. | Afghanistan | 5,472,955 | 2018 | |
| 21. | Kenya | 5,732,632 | 2018 | |
| 20. | Tanzania | 6,199,334 | 2018 | |
| 19. | Turkey | 6,647,968 | 2018 | |
| 18. | Russia | 6,905,174 | 2018 | |
| 17. | Iran | 7,007,580 | 2018 | |
| 16. | Vietnam | 7,358,407 | 2018 | |
| 15. | Sudan | 7,977,869 | 2018 | |
| 14. | Uganda | 8,845,166 | 2018 | |
| 13. | Egypt | 9,879,704 | 2018 | |
| 12. | Mexico | 10,461,290 | 2018 | |
| 11. | Democratic Republic of the Congo | 12,660,993 | 2018 | |
| 10. | Philippines | 12,852,232 | 2018 | |
| 9. | Bangladesh | 17,082,272 | 2018 | |
| 8. | Brazil | 17,292,146 | 2018 | |
| 7. | Ethiopia | 19,951,936 | 2018 | |
| 6. | Indonesia | 20,870,818 | 2018 | |
| 5. | Pakistan | 21,138,800 | 2018 | |
| 4. | United States of America | 22,162,008 | 2018 | |
| 3. | Nigeria | 31,866,180 | 2018 | |
| 2. | China | 80,221,664 | 2018 | |
| 1. | India | 116,683,184 | 2018 |
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