The World: Population - Age 20-24 (1980) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 1. | United States of America | 21,385,704 | 1980 | |
| 2. | Indonesia | 14,082,067 | 1980 | |
| 3. | Brazil | 11,653,842 | 1980 | |
| 4. | Nigeria | 6,475,694 | 1980 | |
| 5. | Mexico | 6,271,300 | 1980 | |
| 6. | Philippines | 4,796,394 | 1980 | |
| 7. | Turkey | 4,034,650 | 1980 | |
| 8. | Ethiopia | 3,148,667 | 1980 | |
| 9. | Myanmar | 3,103,513 | 1980 | |
| 10. | Colombia | 2,728,292 | 1980 | |
| 11. | Democratic Republic of the Congo | 2,479,959 | 1980 | |
| 12. | Argentina | 2,272,473 | 1980 | |
| 13. | Tanzania | 1,529,792 | 1980 | |
| 14. | Kenya | 1,387,711 | 1980 | |
| 15. | Afghanistan | 1,343,795 | 1980 | |
| 16. | Malaysia | 1,262,185 | 1980 | |
| 17. | Nepal | 1,254,196 | 1980 | |
| 18. | Mozambique | 1,061,178 | 1980 | |
| 19. | Uganda | 1,045,199 | 1980 | |
| 20. | Ghana | 930,535 | 1980 | |
| 21. | Cameroon | 763,825 | 1980 | |
| 22. | Madagascar | 748,799 | 1980 | |
| 23. | Cote d'Ivoire | 662,555 | 1980 | |
| 24. | Angola | 631,544 | 1980 | |
| 25. | Cambodia | 586,246 | 1980 | |
| 26. | Dominican Republic | 552,957 | 1980 | |
| 27. | Malawi | 546,705 | 1980 | |
| 28. | Mali | 543,899 | 1980 | |
| 29. | Niger | 525,588 | 1980 | |
| 30. | Somalia | 524,886 | 1980 | |
| 31. | Burkina Faso | 500,494 | 1980 | |
| 32. | Haiti | 490,837 | 1980 | |
| 33. | Zambia | 490,793 | 1980 | |
| 34. | Senegal | 488,689 | 1980 | |
| 35. | Rwanda | 475,783 | 1980 | |
| 36. | Burundi | 402,343 | 1980 | |
| 37. | Chad | 385,536 | 1980 | |
| 38. | Guinea | 383,669 | 1980 | |
| 39. | Paraguay | 306,040 | 1980 | |
| 40. | Honduras | 302,780 | 1980 | |
| 41. | Lebanon | 283,931 | 1980 | |
| 42. | Benin | 272,949 | 1980 | |
| 43. | Nicaragua | 255,453 | 1980 | |
| 44. | Papua New Guinea | 247,400 | 1980 | |
| 45. | Sierra Leone | 232,874 | 1980 | |
| 46. | Libya | 232,103 | 1980 | |
| 47. | Central African Republic | 188,717 | 1980 | |
| 48. | Eritrea | 188,463 | 1980 | |
| 49. | Panama | 175,259 | 1980 | |
| 50. | Jordan | 161,645 | 1980 | |
| 51. | Liberia | 159,005 | 1980 | |
| 52. | Republic of Congo | 145,288 | 1980 | |
| 53. | Mauritania | 129,607 | 1980 | |
| 54. | Lesotho | 118,865 | 1980 | |
| 55. | Trinidad and Tobago | 113,135 | 1980 | |
| 56. | Namibia | 87,798 | 1980 | |
| 57. | Guyana | 74,437 | 1980 | |
| 58. | Guinea-Bissau | 67,960 | 1980 | |
| 59. | Gabon | 60,540 | 1980 | |
| 60. | Swaziland | 52,308 | 1980 | |
| 61. | Bhutan | 35,384 | 1980 | |
| 62. | Suriname | 32,157 | 1980 | |
| 63. | Djibouti | 28,837 | 1980 | |
| 64. | Cape Verde | 26,801 | 1980 | |
| 65. | Barbados | 25,675 | 1980 | |
| 66. | Comoros | 25,304 | 1980 | |
| 67. | The Bahamas | 20,051 | 1980 | |
| 68. | Solomon Islands | 18,149 | 1980 | |
| 69. | Belize | 12,378 | 1980 | |
| 70. | Western Sahara | 10,851 | 1980 | |
| 71. | Saint Lucia | 10,644 | 1980 | |
| 72. | Vanuatu | 10,586 | 1980 | |
| 73. | Seychelles | 6,263 | 1980 | |
| 74. | Saint Kitts and Nevis | 4,642 | 1980 | |
| 75. | Tuvalu | 730 | 1980 |
