The World: Population - Age 35-39 (1981) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 20. | Afghanistan | 716,246 | 1981 | |
| 29. | Angola | 382,815 | 1981 | |
| 11. | Argentina | 1,775,103 | 1981 | |
| 86. | Aruba | 4,098 | 1981 | |
| 72. | Bahrain | 21,848 | 1981 | |
| 4. | Bangladesh | 4,541,097 | 1981 | |
| 76. | Barbados | 12,609 | 1981 | |
| 84. | Belize | 5,492 | 1981 | |
| 47. | Benin | 170,479 | 1981 | |
| 70. | Bhutan | 30,072 | 1981 | |
| 67. | Botswana | 37,900 | 1981 | |
| 3. | Brazil | 6,855,676 | 1981 | |
| 79. | Brunei | 9,521 | 1981 | |
| 37. | Burkina Faso | 301,582 | 1981 | |
| 46. | Burundi | 183,990 | 1981 | |
| 33. | Cambodia | 328,492 | 1981 | |
| 26. | Cameroon | 454,848 | 1981 | |
| 80. | Cape Verde | 7,644 | 1981 | |
| 55. | Central African Republic | 123,708 | 1981 | |
| 43. | Chad | 234,127 | 1981 | |
| 14. | Colombia | 1,331,099 | 1981 | |
| 74. | Comoros | 15,935 | 1981 | |
| 25. | Cote d'Ivoire | 483,700 | 1981 | |
| 13. | Democratic Republic of the Congo | 1,527,107 | 1981 | |
| 73. | Djibouti | 19,636 | 1981 | |
| 89. | Dominica | 2,827 | 1981 | |
| 38. | Dominican Republic | 286,113 | 1981 | |
| 52. | Eritrea | 141,632 | 1981 | |
| 10. | Ethiopia | 1,949,783 | 1981 | |
| 68. | Gabon | 37,512 | 1981 | |
| 24. | Ghana | 487,854 | 1981 | |
| 88. | Grenada | 3,103 | 1981 | |
| 32. | Guatemala | 338,282 | 1981 | |
| 42. | Guinea | 240,940 | 1981 | |
| 66. | Guinea-Bissau | 40,886 | 1981 | |
| 69. | Guyana | 34,588 | 1981 | |
| 36. | Haiti | 308,278 | 1981 | |
| 49. | Honduras | 154,729 | 1981 | |
| 2. | Indonesia | 8,037,094 | 1981 | |
| 59. | Jordan | 101,466 | 1981 | |
| 21. | Kenya | 681,734 | 1981 | |
| 62. | Kosovo | 72,144 | 1981 | |
| 54. | Lebanon | 124,778 | 1981 | |
| 63. | Lesotho | 64,299 | 1981 | |
| 58. | Liberia | 104,470 | 1981 | |
| 50. | Libya | 149,550 | 1981 | |
| 28. | Madagascar | 396,229 | 1981 | |
| 34. | Malawi | 319,087 | 1981 | |
| 19. | Malaysia | 733,430 | 1981 | |
| 30. | Mali | 368,069 | 1981 | |
| 60. | Mauritania | 77,485 | 1981 | |
| 7. | Mexico | 3,443,196 | 1981 | |
| 22. | Mozambique | 647,397 | 1981 | |
| 12. | Myanmar | 1,709,059 | 1981 | |
| 65. | Namibia | 53,759 | 1981 | |
| 18. | Nepal | 809,380 | 1981 | |
| 56. | Nicaragua | 123,646 | 1981 | |
| 35. | Niger | 315,898 | 1981 | |
| 6. | Nigeria | 4,007,207 | 1981 | |
| 5. | Pakistan | 4,453,594 | 1981 | |
| 57. | Panama | 109,350 | 1981 | |
| 51. | Papua New Guinea | 145,600 | 1981 | |
| 48. | Paraguay | 162,565 | 1981 | |
| 15. | Peru | 917,591 | 1981 | |
| 8. | Philippines | 2,611,490 | 1981 | |
| 61. | Republic of Congo | 73,865 | 1981 | |
| 44. | Rwanda | 198,559 | 1981 | |
| 91. | Saint Kitts and Nevis | 1,320 | 1981 | |
| 85. | Saint Lucia | 4,528 | 1981 | |
| 82. | Samoa | 6,200 | 1981 | |
| 87. | Sao Tome and Principe | 3,317 | 1981 | |
| 40. | Senegal | 273,382 | 1981 | |
| 27. | Serbia | 424,225 | 1981 | |
| 90. | Seychelles | 2,809 | 1981 | |
| 45. | Sierra Leone | 197,423 | 1981 | |
| 78. | Solomon Islands | 11,220 | 1981 | |
| 41. | Somalia | 250,680 | 1981 | |
| 17. | Sri Lanka | 855,499 | 1981 | |
| 75. | Suriname | 15,548 | 1981 | |
| 71. | Swaziland | 29,232 | 1981 | |
| 31. | Syria | 360,589 | 1981 | |
| 16. | Tanzania | 907,352 | 1981 | |
| 77. | The Bahamas | 11,491 | 1981 | |
| 53. | Togo | 130,846 | 1981 | |
| 64. | Trinidad and Tobago | 59,053 | 1981 | |
| 9. | Turkey | 2,267,313 | 1981 | |
| 92. | Tuvalu | 365 | 1981 | |
| 23. | Uganda | 519,933 | 1981 | |
| 1. | United States of America | 14,366,109 | 1981 | |
| 83. | Vanuatu | 6,040 | 1981 | |
| 81. | Western Sahara | 6,675 | 1981 | |
| 39. | Zambia | 274,459 | 1981 |
