The World: Population - Age 40-44 (1980) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 1. | United States of America | 11,728,497 | 1980 | |
| 2. | Indonesia | 7,566,345 | 1980 | |
| 3. | Brazil | 5,665,342 | 1980 | |
| 4. | Nigeria | 3,181,186 | 1980 | |
| 5. | Mexico | 2,820,719 | 1980 | |
| 6. | Philippines | 2,136,005 | 1980 | |
| 7. | Turkey | 2,049,302 | 1980 | |
| 8. | Argentina | 1,594,844 | 1980 | |
| 9. | Ethiopia | 1,534,934 | 1980 | |
| 10. | Myanmar | 1,509,994 | 1980 | |
| 11. | Democratic Republic of the Congo | 1,232,807 | 1980 | |
| 12. | Colombia | 1,096,427 | 1980 | |
| 13. | Tanzania | 743,515 | 1980 | |
| 14. | Nepal | 724,849 | 1980 | |
| 15. | Afghanistan | 646,298 | 1980 | |
| 16. | Malaysia | 598,616 | 1980 | |
| 17. | Kenya | 547,903 | 1980 | |
| 18. | Mozambique | 525,207 | 1980 | |
| 19. | Uganda | 461,706 | 1980 | |
| 20. | Ghana | 457,802 | 1980 | |
| 21. | Cote d'Ivoire | 373,867 | 1980 | |
| 22. | Cameroon | 363,533 | 1980 | |
| 23. | Madagascar | 328,669 | 1980 | |
| 24. | Angola | 308,616 | 1980 | |
| 25. | Mali | 295,527 | 1980 | |
| 26. | Cambodia | 287,094 | 1980 | |
| 27. | Niger | 258,053 | 1980 | |
| 28. | Haiti | 257,733 | 1980 | |
| 29. | Burkina Faso | 255,770 | 1980 | |
| 30. | Malawi | 254,168 | 1980 | |
| 31. | Dominican Republic | 234,476 | 1980 | |
| 32. | Somalia | 223,139 | 1980 | |
| 33. | Senegal | 219,836 | 1980 | |
| 34. | Zambia | 214,422 | 1980 | |
| 35. | Guinea | 200,950 | 1980 | |
| 36. | Chad | 197,001 | 1980 | |
| 37. | Rwanda | 178,178 | 1980 | |
| 38. | Sierra Leone | 168,642 | 1980 | |
| 39. | Burundi | 159,464 | 1980 | |
| 40. | Benin | 132,893 | 1980 | |
| 41. | Paraguay | 122,804 | 1980 | |
| 42. | Libya | 122,603 | 1980 | |
| 43. | Honduras | 122,202 | 1980 | |
| 44. | Papua New Guinea | 121,846 | 1980 | |
| 45. | Lebanon | 121,468 | 1980 | |
| 46. | Eritrea | 115,964 | 1980 | |
| 47. | Central African Republic | 114,323 | 1980 | |
| 48. | Nicaragua | 102,560 | 1980 | |
| 49. | Jordan | 86,341 | 1980 | |
| 50. | Panama | 85,566 | 1980 | |
| 51. | Liberia | 84,750 | 1980 | |
| 52. | Republic of Congo | 70,486 | 1980 | |
| 53. | Mauritania | 66,130 | 1980 | |
| 54. | Lesotho | 56,267 | 1980 | |
| 55. | Trinidad and Tobago | 48,139 | 1980 | |
| 56. | Namibia | 43,743 | 1980 | |
| 57. | Guinea-Bissau | 33,357 | 1980 | |
| 58. | Gabon | 33,334 | 1980 | |
| 59. | Guyana | 28,876 | 1980 | |
| 60. | Bhutan | 24,351 | 1980 | |
| 61. | Swaziland | 23,662 | 1980 | |
| 62. | Suriname | 15,559 | 1980 | |
| 63. | Djibouti | 14,938 | 1980 | |
| 64. | Comoros | 13,498 | 1980 | |
| 65. | Cape Verde | 11,482 | 1980 | |
| 66. | Barbados | 10,062 | 1980 | |
| 67. | The Bahamas | 9,497 | 1980 | |
| 68. | Solomon Islands | 9,219 | 1980 | |
| 69. | Belize | 5,127 | 1980 | |
| 70. | Western Sahara | 5,081 | 1980 | |
| 71. | Vanuatu | 4,682 | 1980 | |
| 72. | Saint Lucia | 3,945 | 1980 | |
| 73. | Seychelles | 2,816 | 1980 | |
| 74. | Saint Kitts and Nevis | 1,174 | 1980 | |
| 75. | Tuvalu | 332 | 1980 |
