The World: Population - Age 15-19 (2025) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 25. | Thailand | 4,272,044 | 2025 (Est.) | |
| 178. | The Bahamas | 24,767 | 2025 (Est.) | |
| 133. | The Gambia | 247,712 | 2025 (Est.) | |
| 80. | Togo | 1,008,336 | 2025 (Est.) | |
| 189. | Tonga | 10,243 | 2025 (Est.) | |
| 162. | Trinidad and Tobago | 73,426 | 2025 (Est.) | |
| 86. | Tunisia | 847,935 | 2025 (Est.) | |
| 16. | Turkey | 6,961,537 | 2025 (Est.) | |
| 110. | Turkmenistan | 438,222 | 2025 (Est.) | |
| 205. | Turks and Caicos Islands | 3,954 | 2025 (Est.) | |
| 222. | Tuvalu | 947 | 2025 (Est.) | |
| 198. | U.S. Virgin Islands | 5,715 | 2025 (Est.) | |
| 20. | Uganda | 6,361,467 | 2025 (Est.) | |
| 57. | Ukraine | 2,146,619 | 2025 (Est.) | |
| 111. | United Arab Emirates | 408,951 | 2025 (Est.) | |
| 29. | United Kingdom | 3,946,984 | 2025 (Est.) | |
| 4. | United States of America | 22,967,156 | 2025 (Est.) | |
| 135. | Uruguay | 226,409 | 2025 (Est.) | |
| 54. | Uzbekistan | 2,284,430 | 2025 (Est.) | |
| 180. | Vanuatu | 21,526 | 2025 (Est.) | |
| 48. | Venezuela | 2,678,327 | 2025 (Est.) | |
| 14. | Vietnam | 7,609,954 | 2025 (Est.) | |
| 221. | Wallis and Futuna | 998 | 2025 (Est.) | |
| 123. | West Bank | 304,884 | 2025 (Est.) | |
| 161. | Western Sahara | 74,542 | 2025 (Est.) | |
| 32. | Yemen | 3,642,143 | 2025 (Est.) | |
| 52. | Zambia | 2,358,442 | 2025 (Est.) | |
| 66. | Zimbabwe | 1,680,946 | 2025 (Est.) |
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