The World: Population - Age 30-34 (1980) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 1. | United States of America | 17,742,706 | 1980 | |
| 2. | Indonesia | 8,160,772 | 1980 | |
| 3. | Brazil | 8,155,374 | 1980 | |
| 4. | Nigeria | 4,647,798 | 1980 | |
| 5. | Mexico | 3,916,108 | 1980 | |
| 6. | Philippines | 3,109,106 | 1980 | |
| 7. | Turkey | 2,684,713 | 1980 | |
| 8. | Ethiopia | 2,234,707 | 1980 | |
| 9. | Argentina | 1,971,053 | 1980 | |
| 10. | Myanmar | 1,911,086 | 1980 | |
| 11. | Democratic Republic of the Congo | 1,785,304 | 1980 | |
| 12. | Colombia | 1,620,634 | 1980 | |
| 13. | Tanzania | 1,057,699 | 1980 | |
| 14. | Afghanistan | 945,185 | 1980 | |
| 15. | Nepal | 900,021 | 1980 | |
| 16. | Malaysia | 844,957 | 1980 | |
| 17. | Kenya | 832,172 | 1980 | |
| 18. | Mozambique | 753,155 | 1980 | |
| 19. | Uganda | 601,587 | 1980 | |
| 20. | Cote d'Ivoire | 577,896 | 1980 | |
| 21. | Ghana | 543,366 | 1980 | |
| 22. | Cameroon | 531,500 | 1980 | |
| 23. | Madagascar | 490,578 | 1980 | |
| 24. | Angola | 447,163 | 1980 | |
| 25. | Mali | 412,470 | 1980 | |
| 26. | Cambodia | 393,688 | 1980 | |
| 27. | Malawi | 374,946 | 1980 | |
| 28. | Niger | 370,774 | 1980 | |
| 29. | Haiti | 354,967 | 1980 | |
| 30. | Dominican Republic | 346,662 | 1980 | |
| 31. | Burkina Faso | 344,002 | 1980 | |
| 32. | Senegal | 330,230 | 1980 | |
| 33. | Zambia | 327,049 | 1980 | |
| 34. | Somalia | 289,681 | 1980 | |
| 35. | Guinea | 279,136 | 1980 | |
| 36. | Chad | 275,543 | 1980 | |
| 37. | Rwanda | 271,422 | 1980 | |
| 38. | Burundi | 231,836 | 1980 | |
| 39. | Sierra Leone | 217,034 | 1980 | |
| 40. | Benin | 195,297 | 1980 | |
| 41. | Honduras | 180,829 | 1980 | |
| 42. | Paraguay | 180,656 | 1980 | |
| 43. | Papua New Guinea | 177,543 | 1980 | |
| 44. | Libya | 173,629 | 1980 | |
| 45. | Eritrea | 155,666 | 1980 | |
| 46. | Lebanon | 150,242 | 1980 | |
| 47. | Nicaragua | 149,371 | 1980 | |
| 48. | Central African Republic | 126,687 | 1980 | |
| 49. | Panama | 125,944 | 1980 | |
| 50. | Liberia | 119,008 | 1980 | |
| 51. | Jordan | 110,963 | 1980 | |
| 52. | Mauritania | 90,015 | 1980 | |
| 53. | Republic of Congo | 88,422 | 1980 | |
| 54. | Lesotho | 77,930 | 1980 | |
| 55. | Trinidad and Tobago | 72,238 | 1980 | |
| 56. | Namibia | 63,069 | 1980 | |
| 57. | Guinea-Bissau | 48,446 | 1980 | |
| 58. | Guyana | 42,872 | 1980 | |
| 59. | Gabon | 42,786 | 1980 | |
| 60. | Swaziland | 34,814 | 1980 | |
| 61. | Bhutan | 32,388 | 1980 | |
| 62. | Djibouti | 22,626 | 1980 | |
| 63. | Suriname | 18,137 | 1980 | |
| 64. | Comoros | 18,107 | 1980 | |
| 65. | Barbados | 15,354 | 1980 | |
| 66. | The Bahamas | 13,384 | 1980 | |
| 67. | Solomon Islands | 12,472 | 1980 | |
| 68. | Cape Verde | 7,558 | 1980 | |
| 69. | Western Sahara | 7,349 | 1980 | |
| 70. | Vanuatu | 7,160 | 1980 | |
| 71. | Belize | 6,594 | 1980 | |
| 72. | Saint Lucia | 5,545 | 1980 | |
| 73. | Seychelles | 3,234 | 1980 | |
| 74. | Saint Kitts and Nevis | 1,692 | 1980 | |
| 75. | Tuvalu | 426 | 1980 |
