The World: Population - Male - Age 25-29 (1981) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 1. | United States of America | 10,049,369 | 1981 | |
| 2. | Indonesia | 5,698,590 | 1981 | |
| 3. | Brazil | 5,122,367 | 1981 | |
| 4. | Bangladesh | 3,541,446 | 1981 | |
| 5. | Pakistan | 3,297,928 | 1981 | |
| 6. | Nigeria | 2,931,127 | 1981 | |
| 7. | Mexico | 2,425,477 | 1981 | |
| 8. | Philippines | 2,017,137 | 1981 | |
| 9. | Turkey | 1,785,338 | 1981 | |
| 10. | Ethiopia | 1,415,698 | 1981 | |
| 11. | Myanmar | 1,262,101 | 1981 | |
| 12. | Argentina | 1,113,718 | 1981 | |
| 13. | Colombia | 1,098,880 | 1981 | |
| 14. | Democratic Republic of the Congo | 1,059,805 | 1981 | |
| 15. | Peru | 691,512 | 1981 | |
| 16. | Sri Lanka | 663,049 | 1981 | |
| 17. | Tanzania | 582,763 | 1981 | |
| 18. | Nepal | 570,454 | 1981 | |
| 19. | Kenya | 552,437 | 1981 | |
| 20. | Malaysia | 544,372 | 1981 | |
| 21. | Afghanistan | 526,919 | 1981 | |
| 22. | Mozambique | 450,119 | 1981 | |
| 23. | Uganda | 383,724 | 1981 | |
| 24. | Cote d'Ivoire | 337,831 | 1981 | |
| 25. | Ghana | 333,284 | 1981 | |
| 26. | Serbia | 331,968 | 1981 | |
| 27. | Cameroon | 327,985 | 1981 | |
| 28. | Madagascar | 302,016 | 1981 | |
| 29. | Syria | 290,118 | 1981 | |
| 30. | Angola | 274,937 | 1981 | |
| 31. | Guatemala | 255,929 | 1981 | |
| 32. | Malawi | 231,578 | 1981 | |
| 33. | Dominican Republic | 230,339 | 1981 | |
| 34. | Niger | 224,001 | 1981 | |
| 35. | Haiti | 212,104 | 1981 | |
| 36. | Zambia | 207,509 | 1981 | |
| 37. | Rwanda | 203,827 | 1981 | |
| 38. | Mali | 203,068 | 1981 | |
| 39. | Senegal | 201,810 | 1981 | |
| 40. | Cambodia | 200,480 | 1981 | |
| 41. | Burkina Faso | 186,369 | 1981 | |
| 42. | Burundi | 168,615 | 1981 | |
| 43. | Somalia | 164,012 | 1981 | |
| 44. | Guinea | 156,842 | 1981 | |
| 45. | Chad | 156,283 | 1981 | |
| 46. | Paraguay | 122,864 | 1981 | |
| 47. | Libya | 119,211 | 1981 | |
| 48. | Honduras | 117,671 | 1981 | |
| 49. | Lebanon | 116,124 | 1981 | |
| 50. | Papua New Guinea | 112,502 | 1981 | |
| 51. | Sierra Leone | 107,077 | 1981 | |
| 52. | Nicaragua | 105,958 | 1981 | |
| 53. | Benin | 98,915 | 1981 | |
| 54. | Togo | 97,205 | 1981 | |
| 55. | Eritrea | 77,433 | 1981 | |
| 56. | Panama | 76,420 | 1981 | |
| 57. | Liberia | 73,074 | 1981 | |
| 58. | Central African Republic | 68,999 | 1981 | |
| 59. | Jordan | 64,217 | 1981 | |
| 60. | Kosovo | 54,937 | 1981 | |
| 61. | Republic of Congo | 54,869 | 1981 | |
| 62. | Mauritania | 50,917 | 1981 | |
| 63. | Lesotho | 46,912 | 1981 | |
| 64. | Trinidad and Tobago | 46,108 | 1981 | |
| 65. | Namibia | 37,585 | 1981 | |
| 66. | Bahrain | 30,559 | 1981 | |
| 67. | Guyana | 29,624 | 1981 | |
| 68. | Botswana | 26,124 | 1981 | |
| 69. | Gabon | 25,853 | 1981 | |
| 70. | Guinea-Bissau | 24,054 | 1981 | |
| 71. | Swaziland | 19,676 | 1981 | |
| 72. | Bhutan | 18,480 | 1981 | |
| 73. | Djibouti | 14,384 | 1981 | |
| 74. | Suriname | 12,675 | 1981 | |
| 75. | Brunei | 11,007 | 1981 | |
| 76. | Barbados | 10,949 | 1981 | |
| 77. | Comoros | 9,404 | 1981 | |
| 78. | The Bahamas | 8,251 | 1981 | |
| 79. | Solomon Islands | 7,452 | 1981 | |
| 80. | Cape Verde | 5,975 | 1981 | |
| 81. | Western Sahara | 5,075 | 1981 | |
| 82. | Belize | 5,018 | 1981 | |
| 83. | Samoa | 4,999 | 1981 | |
| 84. | Vanuatu | 4,613 | 1981 | |
| 85. | Saint Lucia | 4,089 | 1981 | |
| 86. | Grenada | 2,867 | 1981 | |
| 87. | Sao Tome and Principe | 2,715 | 1981 | |
| 88. | Dominica | 2,703 | 1981 | |
| 89. | Aruba | 2,656 | 1981 | |
| 90. | Seychelles | 2,345 | 1981 | |
| 91. | Saint Kitts and Nevis | 1,556 | 1981 | |
| 92. | Tuvalu | 230 | 1981 |
