The World: Population - Male - Age 35-39 (1981) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 1. | United States of America | 7,061,470 | 1981 | |
| 2. | Indonesia | 3,972,645 | 1981 | |
| 3. | Brazil | 3,393,128 | 1981 | |
| 4. | Bangladesh | 2,379,282 | 1981 | |
| 5. | Pakistan | 2,262,809 | 1981 | |
| 6. | Nigeria | 2,095,723 | 1981 | |
| 7. | Mexico | 1,686,493 | 1981 | |
| 8. | Philippines | 1,319,621 | 1981 | |
| 9. | Turkey | 1,126,376 | 1981 | |
| 10. | Ethiopia | 998,585 | 1981 | |
| 11. | Argentina | 895,186 | 1981 | |
| 12. | Myanmar | 840,739 | 1981 | |
| 13. | Democratic Republic of the Congo | 731,673 | 1981 | |
| 14. | Colombia | 608,976 | 1981 | |
| 15. | Peru | 463,352 | 1981 | |
| 16. | Tanzania | 442,122 | 1981 | |
| 17. | Sri Lanka | 431,463 | 1981 | |
| 18. | Nepal | 399,477 | 1981 | |
| 19. | Malaysia | 375,080 | 1981 | |
| 20. | Afghanistan | 367,735 | 1981 | |
| 21. | Kenya | 330,532 | 1981 | |
| 22. | Mozambique | 314,447 | 1981 | |
| 23. | Cote d'Ivoire | 252,223 | 1981 | |
| 24. | Uganda | 237,519 | 1981 | |
| 25. | Cameroon | 226,031 | 1981 | |
| 26. | Ghana | 221,275 | 1981 | |
| 27. | Serbia | 209,365 | 1981 | |
| 28. | Angola | 191,505 | 1981 | |
| 29. | Madagascar | 186,405 | 1981 | |
| 30. | Syria | 179,936 | 1981 | |
| 31. | Mali | 175,561 | 1981 | |
| 32. | Guatemala | 171,763 | 1981 | |
| 33. | Niger | 159,653 | 1981 | |
| 34. | Malawi | 158,116 | 1981 | |
| 35. | Haiti | 151,474 | 1981 | |
| 36. | Dominican Republic | 145,045 | 1981 | |
| 37. | Cambodia | 138,689 | 1981 | |
| 38. | Zambia | 136,836 | 1981 | |
| 39. | Senegal | 135,144 | 1981 | |
| 40. | Burkina Faso | 131,969 | 1981 | |
| 41. | Guinea | 112,313 | 1981 | |
| 42. | Chad | 110,654 | 1981 | |
| 43. | Somalia | 107,085 | 1981 | |
| 44. | Sierra Leone | 92,137 | 1981 | |
| 45. | Rwanda | 88,194 | 1981 | |
| 46. | Libya | 87,607 | 1981 | |
| 47. | Burundi | 84,669 | 1981 | |
| 48. | Papua New Guinea | 83,500 | 1981 | |
| 49. | Paraguay | 79,691 | 1981 | |
| 50. | Honduras | 73,709 | 1981 | |
| 51. | Benin | 72,072 | 1981 | |
| 52. | Eritrea | 67,167 | 1981 | |
| 53. | Togo | 65,118 | 1981 | |
| 54. | Nicaragua | 61,408 | 1981 | |
| 55. | Lebanon | 58,735 | 1981 | |
| 56. | Liberia | 55,897 | 1981 | |
| 57. | Panama | 55,183 | 1981 | |
| 58. | Central African Republic | 53,951 | 1981 | |
| 59. | Jordan | 51,685 | 1981 | |
| 60. | Mauritania | 36,193 | 1981 | |
| 61. | Republic of Congo | 36,039 | 1981 | |
| 62. | Kosovo | 34,555 | 1981 | |
| 63. | Lesotho | 31,775 | 1981 | |
| 64. | Trinidad and Tobago | 29,488 | 1981 | |
| 65. | Namibia | 27,017 | 1981 | |
| 66. | Gabon | 18,965 | 1981 | |
| 67. | Guinea-Bissau | 17,861 | 1981 | |
| 68. | Botswana | 17,098 | 1981 | |
| 69. | Bhutan | 16,919 | 1981 | |
| 70. | Guyana | 16,915 | 1981 | |
| 71. | Bahrain | 14,514 | 1981 | |
| 72. | Swaziland | 13,921 | 1981 | |
| 73. | Djibouti | 10,092 | 1981 | |
| 74. | Comoros | 7,675 | 1981 | |
| 75. | Suriname | 7,350 | 1981 | |
| 76. | Barbados | 5,956 | 1981 | |
| 77. | Solomon Islands | 5,773 | 1981 | |
| 78. | Brunei | 5,524 | 1981 | |
| 79. | The Bahamas | 5,434 | 1981 | |
| 80. | Western Sahara | 3,293 | 1981 | |
| 81. | Vanuatu | 3,174 | 1981 | |
| 82. | Samoa | 3,061 | 1981 | |
| 83. | Belize | 2,794 | 1981 | |
| 84. | Cape Verde | 2,781 | 1981 | |
| 85. | Saint Lucia | 2,049 | 1981 | |
| 86. | Aruba | 1,912 | 1981 | |
| 87. | Sao Tome and Principe | 1,560 | 1981 | |
| 88. | Seychelles | 1,482 | 1981 | |
| 89. | Grenada | 1,439 | 1981 | |
| 90. | Dominica | 1,379 | 1981 | |
| 91. | Saint Kitts and Nevis | 603 | 1981 | |
| 92. | Tuvalu | 154 | 1981 |
