The World: Population - Age 0-4 (2025) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 32. | Thailand | 3,997,429 | 2025 (Est.) | |
| 176. | The Bahamas | 24,346 | 2025 (Est.) | |
| 131. | The Gambia | 264,592 | 2025 (Est.) | |
| 75. | Togo | 1,359,198 | 2025 (Est.) | |
| 188. | Tonga | 10,043 | 2025 (Est.) | |
| 165. | Trinidad and Tobago | 59,806 | 2025 (Est.) | |
| 90. | Tunisia | 808,566 | 2025 (Est.) | |
| 18. | Turkey | 6,335,332 | 2025 (Est.) | |
| 105. | Turkmenistan | 477,442 | 2025 (Est.) | |
| 205. | Turks and Caicos Islands | 3,923 | 2025 (Est.) | |
| 219. | Tuvalu | 1,243 | 2025 (Est.) | |
| 200. | U.S. Virgin Islands | 5,520 | 2025 (Est.) | |
| 12. | Uganda | 10,948,024 | 2025 (Est.) | |
| 69. | Ukraine | 1,670,244 | 2025 (Est.) | |
| 100. | United Arab Emirates | 529,795 | 2025 (Est.) | |
| 33. | United Kingdom | 3,847,892 | 2025 (Est.) | |
| 5. | United States of America | 22,913,756 | 2025 (Est.) | |
| 137. | Uruguay | 215,518 | 2025 (Est.) | |
| 56. | Uzbekistan | 2,344,062 | 2025 (Est.) | |
| 179. | Vanuatu | 21,722 | 2025 (Est.) | |
| 48. | Venezuela | 2,787,843 | 2025 (Est.) | |
| 16. | Vietnam | 6,794,382 | 2025 (Est.) | |
| 221. | Wallis and Futuna | 972 | 2025 (Est.) | |
| 118. | West Bank | 323,123 | 2025 (Est.) | |
| 157. | Western Sahara | 89,457 | 2025 (Est.) | |
| 36. | Yemen | 3,617,174 | 2025 (Est.) | |
| 39. | Zambia | 3,434,312 | 2025 (Est.) | |
| 57. | Zimbabwe | 2,296,986 | 2025 (Est.) |
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