The World: Population - Age 25-29 (1981) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 38. | Zambia | 414,653 | 1981 | |
| 81. | Western Sahara | 10,329 | 1981 | |
| 84. | Vanuatu | 9,070 | 1981 | |
| 1. | United States of America | 20,169,056 | 1981 | |
| 23. | Uganda | 783,817 | 1981 | |
| 92. | Tuvalu | 598 | 1981 | |
| 9. | Turkey | 3,494,450 | 1981 | |
| 64. | Trinidad and Tobago | 92,245 | 1981 | |
| 54. | Togo | 194,562 | 1981 | |
| 78. | The Bahamas | 17,298 | 1981 | |
| 17. | Tanzania | 1,303,492 | 1981 | |
| 29. | Syria | 575,234 | 1981 | |
| 71. | Swaziland | 43,662 | 1981 | |
| 74. | Suriname | 25,955 | 1981 | |
| 16. | Sri Lanka | 1,311,596 | 1981 | |
| 42. | Somalia | 373,732 | 1981 | |
| 80. | Solomon Islands | 15,216 | 1981 | |
| 50. | Sierra Leone | 227,921 | 1981 | |
| 90. | Seychelles | 4,368 | 1981 | |
| 27. | Serbia | 650,610 | 1981 | |
| 39. | Senegal | 413,776 | 1981 | |
| 87. | Sao Tome and Principe | 5,645 | 1981 | |
| 83. | Samoa | 9,729 | 1981 | |
| 85. | Saint Lucia | 8,313 | 1981 | |
| 91. | Saint Kitts and Nevis | 3,161 | 1981 | |
| 41. | Rwanda | 404,692 | 1981 | |
| 60. | Republic of Congo | 114,736 | 1981 | |
| 8. | Philippines | 4,159,203 | 1981 | |
| 15. | Peru | 1,365,005 | 1981 | |
| 46. | Paraguay | 246,527 | 1981 | |
| 51. | Papua New Guinea | 217,254 | 1981 | |
| 56. | Panama | 152,149 | 1981 | |
| 5. | Pakistan | 6,402,120 | 1981 | |
| 6. | Nigeria | 5,666,022 | 1981 | |
| 36. | Niger | 448,717 | 1981 | |
| 52. | Nicaragua | 214,289 | 1981 | |
| 20. | Nepal | 1,114,260 | 1981 | |
| 65. | Namibia | 75,563 | 1981 | |
| 11. | Myanmar | 2,556,579 | 1981 | |
| 22. | Mozambique | 923,074 | 1981 | |
| 7. | Mexico | 4,994,510 | 1981 | |
| 62. | Mauritania | 107,880 | 1981 | |
| 33. | Mali | 473,058 | 1981 | |
| 19. | Malaysia | 1,119,893 | 1981 | |
| 34. | Malawi | 467,001 | 1981 | |
| 28. | Madagascar | 622,907 | 1981 | |
| 53. | Libya | 203,635 | 1981 | |
| 58. | Liberia | 141,295 | 1981 | |
| 63. | Lesotho | 98,324 | 1981 | |
| 48. | Lebanon | 234,136 | 1981 | |
| 61. | Kosovo | 107,933 | 1981 | |
| 18. | Kenya | 1,143,416 | 1981 | |
| 59. | Jordan | 125,177 | 1981 | |
| 2. | Indonesia | 12,011,356 | 1981 | |
| 47. | Honduras | 245,572 | 1981 | |
| 37. | Haiti | 427,661 | 1981 | |
| 68. | Guyana | 60,740 | 1981 | |
| 67. | Guinea-Bissau | 61,669 | 1981 | |
| 44. | Guinea | 329,856 | 1981 | |
| 31. | Guatemala | 511,687 | 1981 | |
| 86. | Grenada | 5,735 | 1981 | |
| 24. | Ghana | 708,958 | 1981 | |
| 69. | Gabon | 51,274 | 1981 | |
| 10. | Ethiopia | 2,784,102 | 1981 | |
| 55. | Eritrea | 171,225 | 1981 | |
| 35. | Dominican Republic | 450,653 | 1981 | |
| 89. | Dominica | 5,062 | 1981 | |
| 73. | Djibouti | 27,815 | 1981 | |
| 14. | Democratic Republic of the Congo | 2,148,097 | 1981 | |
| 25. | Cote d'Ivoire | 663,856 | 1981 | |
| 76. | Comoros | 21,050 | 1981 | |
| 12. | Colombia | 2,249,424 | 1981 | |
| 45. | Chad | 325,776 | 1981 | |
| 57. | Central African Republic | 150,927 | 1981 | |
| 79. | Cape Verde | 15,924 | 1981 | |
| 26. | Cameroon | 658,120 | 1981 | |
| 32. | Cambodia | 502,942 | 1981 | |
| 43. | Burundi | 351,004 | 1981 | |
| 40. | Burkina Faso | 409,889 | 1981 | |
| 77. | Brunei | 20,107 | 1981 | |
| 3. | Brazil | 10,202,970 | 1981 | |
| 66. | Botswana | 63,096 | 1981 | |
| 72. | Bhutan | 34,367 | 1981 | |
| 49. | Benin | 230,882 | 1981 | |
| 82. | Belize | 9,952 | 1981 | |
| 75. | Barbados | 22,510 | 1981 | |
| 4. | Bangladesh | 6,804,488 | 1981 | |
| 70. | Bahrain | 44,365 | 1981 | |
| 88. | Aruba | 5,614 | 1981 | |
| 13. | Argentina | 2,204,660 | 1981 | |
| 30. | Angola | 546,612 | 1981 | |
| 21. | Afghanistan | 1,029,557 | 1981 |
