The World: Population - Age 15-19 (1981) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 1. | United States of America | 20,540,556 | 1981 | |
| 2. | Indonesia | 16,441,687 | 1981 | |
| 3. | Brazil | 13,957,332 | 1981 | |
| 4. | Bangladesh | 10,049,409 | 1981 | |
| 5. | Pakistan | 9,443,232 | 1981 | |
| 6. | Nigeria | 7,950,781 | 1981 | |
| 7. | Mexico | 7,802,551 | 1981 | |
| 8. | Philippines | 5,625,981 | 1981 | |
| 9. | Turkey | 5,080,909 | 1981 | |
| 10. | Ethiopia | 3,901,932 | 1981 | |
| 11. | Myanmar | 3,781,715 | 1981 | |
| 12. | Colombia | 3,325,240 | 1981 | |
| 13. | Democratic Republic of the Congo | 3,053,957 | 1981 | |
| 14. | Argentina | 2,346,595 | 1981 | |
| 15. | Peru | 1,960,348 | 1981 | |
| 16. | Tanzania | 1,886,076 | 1981 | |
| 17. | Kenya | 1,853,841 | 1981 | |
| 18. | Sri Lanka | 1,647,838 | 1981 | |
| 19. | Malaysia | 1,506,628 | 1981 | |
| 20. | Nepal | 1,500,958 | 1981 | |
| 21. | Uganda | 1,471,213 | 1981 | |
| 22. | Afghanistan | 1,447,374 | 1981 | |
| 23. | Mozambique | 1,280,767 | 1981 | |
| 24. | Ghana | 1,246,236 | 1981 | |
| 25. | Syria | 983,010 | 1981 | |
| 26. | Madagascar | 942,513 | 1981 | |
| 27. | Cameroon | 939,264 | 1981 | |
| 28. | Cambodia | 884,835 | 1981 | |
| 29. | Cote d'Ivoire | 749,904 | 1981 | |
| 30. | Angola | 745,529 | 1981 | |
| 31. | Guatemala | 705,864 | 1981 | |
| 32. | Dominican Republic | 702,498 | 1981 | |
| 33. | Malawi | 675,864 | 1981 | |
| 34. | Somalia | 660,393 | 1981 | |
| 35. | Burkina Faso | 658,479 | 1981 | |
| 36. | Niger | 635,356 | 1981 | |
| 37. | Mali | 629,276 | 1981 | |
| 38. | Zambia | 617,560 | 1981 | |
| 39. | Senegal | 598,936 | 1981 | |
| 40. | Rwanda | 595,103 | 1981 | |
| 41. | Haiti | 582,618 | 1981 | |
| 42. | Serbia | 523,561 | 1981 | |
| 43. | Burundi | 471,620 | 1981 | |
| 44. | Guinea | 462,717 | 1981 | |
| 45. | Chad | 457,044 | 1981 | |
| 46. | Honduras | 397,385 | 1981 | |
| 47. | Benin | 356,616 | 1981 | |
| 48. | Paraguay | 350,593 | 1981 | |
| 49. | Lebanon | 346,977 | 1981 | |
| 50. | Libya | 331,667 | 1981 | |
| 51. | Sierra Leone | 323,212 | 1981 | |
| 52. | Nicaragua | 320,927 | 1981 | |
| 53. | Papua New Guinea | 313,060 | 1981 | |
| 54. | Togo | 286,723 | 1981 | |
| 55. | Jordan | 262,808 | 1981 | |
| 56. | Eritrea | 246,273 | 1981 | |
| 57. | Central African Republic | 246,237 | 1981 | |
| 58. | Panama | 222,232 | 1981 | |
| 59. | Liberia | 194,548 | 1981 | |
| 60. | Republic of Congo | 188,296 | 1981 | |
| 61. | Kosovo | 172,411 | 1981 | |
| 62. | Mauritania | 164,431 | 1981 | |
| 63. | Lesotho | 146,412 | 1981 | |
| 64. | Trinidad and Tobago | 133,522 | 1981 | |
| 65. | Namibia | 105,827 | 1981 | |
| 66. | Botswana | 97,178 | 1981 | |
| 67. | Guyana | 95,103 | 1981 | |
| 68. | Gabon | 77,225 | 1981 | |
| 69. | Guinea-Bissau | 73,848 | 1981 | |
| 70. | Swaziland | 66,633 | 1981 | |
| 71. | Suriname | 46,943 | 1981 | |
| 72. | Bhutan | 41,559 | 1981 | |
| 73. | Cape Verde | 41,312 | 1981 | |
| 74. | Bahrain | 36,028 | 1981 | |
| 75. | Djibouti | 33,943 | 1981 | |
| 76. | Comoros | 33,660 | 1981 | |
| 77. | Barbados | 26,999 | 1981 | |
| 78. | The Bahamas | 25,597 | 1981 | |
| 79. | Solomon Islands | 23,907 | 1981 | |
| 80. | Samoa | 21,016 | 1981 | |
| 81. | Brunei | 20,407 | 1981 | |
| 82. | Belize | 17,741 | 1981 | |
| 83. | Saint Lucia | 15,256 | 1981 | |
| 84. | Western Sahara | 15,038 | 1981 | |
| 85. | Vanuatu | 13,220 | 1981 | |
| 86. | Grenada | 11,706 | 1981 | |
| 87. | Sao Tome and Principe | 10,456 | 1981 | |
| 88. | Dominica | 9,030 | 1981 | |
| 89. | Seychelles | 7,829 | 1981 | |
| 90. | Aruba | 6,656 | 1981 | |
| 91. | Saint Kitts and Nevis | 5,499 | 1981 | |
| 92. | Tuvalu | 1,029 | 1981 |
