The World: Population - Age 50-54 (1981) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 1. | United States of America | 11,594,631 | 1981 | |
| 2. | Indonesia | 5,225,337 | 1981 | |
| 3. | Brazil | 4,135,477 | 1981 | |
| 4. | Pakistan | 2,871,409 | 1981 | |
| 5. | Bangladesh | 2,565,082 | 1981 | |
| 6. | Nigeria | 2,154,852 | 1981 | |
| 7. | Mexico | 1,949,689 | 1981 | |
| 8. | Turkey | 1,799,564 | 1981 | |
| 9. | Argentina | 1,475,404 | 1981 | |
| 10. | Philippines | 1,465,902 | 1981 | |
| 11. | Myanmar | 1,213,465 | 1981 | |
| 12. | Ethiopia | 1,109,627 | 1981 | |
| 13. | Democratic Republic of the Congo | 842,578 | 1981 | |
| 14. | Colombia | 834,537 | 1981 | |
| 15. | Serbia | 590,109 | 1981 | |
| 16. | Sri Lanka | 553,408 | 1981 | |
| 17. | Peru | 552,545 | 1981 | |
| 18. | Nepal | 515,990 | 1981 | |
| 19. | Tanzania | 513,563 | 1981 | |
| 20. | Malaysia | 421,699 | 1981 | |
| 21. | Afghanistan | 386,026 | 1981 | |
| 22. | Kenya | 381,159 | 1981 | |
| 23. | Mozambique | 351,631 | 1981 | |
| 24. | Uganda | 339,179 | 1981 | |
| 25. | Ghana | 328,170 | 1981 | |
| 26. | Madagascar | 277,223 | 1981 | |
| 27. | Syria | 258,774 | 1981 | |
| 28. | Cameroon | 248,415 | 1981 | |
| 29. | Cote d'Ivoire | 233,005 | 1981 | |
| 30. | Cambodia | 229,737 | 1981 | |
| 31. | Angola | 208,274 | 1981 | |
| 32. | Mali | 203,535 | 1981 | |
| 33. | Guatemala | 200,219 | 1981 | |
| 34. | Burkina Faso | 185,473 | 1981 | |
| 35. | Haiti | 183,368 | 1981 | |
| 36. | Dominican Republic | 178,656 | 1981 | |
| 37. | Niger | 174,465 | 1981 | |
| 38. | Malawi | 171,855 | 1981 | |
| 39. | Somalia | 163,633 | 1981 | |
| 40. | Senegal | 152,546 | 1981 | |
| 41. | Guinea | 143,322 | 1981 | |
| 42. | Rwanda | 142,611 | 1981 | |
| 43. | Zambia | 140,692 | 1981 | |
| 44. | Chad | 135,513 | 1981 | |
| 45. | Burundi | 115,826 | 1981 | |
| 46. | Sierra Leone | 110,493 | 1981 | |
| 47. | Lebanon | 101,766 | 1981 | |
| 48. | Paraguay | 101,479 | 1981 | |
| 49. | Central African Republic | 93,299 | 1981 | |
| 50. | Benin | 90,733 | 1981 | |
| 51. | Honduras | 90,042 | 1981 | |
| 52. | Libya | 87,662 | 1981 | |
| 53. | Papua New Guinea | 82,987 | 1981 | |
| 54. | Eritrea | 77,757 | 1981 | |
| 55. | Nicaragua | 75,023 | 1981 | |
| 56. | Togo | 69,106 | 1981 | |
| 57. | Panama | 63,147 | 1981 | |
| 58. | Jordan | 58,253 | 1981 | |
| 59. | Liberia | 56,592 | 1981 | |
| 60. | Kosovo | 52,948 | 1981 | |
| 61. | Republic of Congo | 52,678 | 1981 | |
| 62. | Mauritania | 49,022 | 1981 | |
| 63. | Lesotho | 48,168 | 1981 | |
| 64. | Trinidad and Tobago | 37,011 | 1981 | |
| 65. | Namibia | 28,821 | 1981 | |
| 66. | Gabon | 28,231 | 1981 | |
| 67. | Botswana | 25,132 | 1981 | |
| 68. | Guyana | 22,022 | 1981 | |
| 69. | Guinea-Bissau | 21,708 | 1981 | |
| 70. | Swaziland | 16,335 | 1981 | |
| 71. | Bhutan | 15,628 | 1981 | |
| 72. | Suriname | 12,072 | 1981 | |
| 73. | Djibouti | 10,314 | 1981 | |
| 74. | Bahrain | 10,231 | 1981 | |
| 75. | Cape Verde | 10,000 | 1981 | |
| 76. | Barbados | 9,228 | 1981 | |
| 77. | Comoros | 9,090 | 1981 | |
| 78. | Solomon Islands | 6,392 | 1981 | |
| 79. | The Bahamas | 6,223 | 1981 | |
| 80. | Brunei | 5,021 | 1981 | |
| 81. | Samoa | 4,923 | 1981 | |
| 82. | Western Sahara | 4,388 | 1981 | |
| 83. | Belize | 4,067 | 1981 | |
| 84. | Saint Lucia | 3,502 | 1981 | |
| 85. | Sao Tome and Principe | 3,235 | 1981 | |
| 86. | Grenada | 3,224 | 1981 | |
| 87. | Vanuatu | 3,011 | 1981 | |
| 88. | Aruba | 2,500 | 1981 | |
| 89. | Seychelles | 2,349 | 1981 | |
| 90. | Dominica | 2,267 | 1981 | |
| 91. | Saint Kitts and Nevis | 1,368 | 1981 | |
| 92. | Tuvalu | 336 | 1981 |
