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| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 1. | United States of America | 5,616,314 | 1980 | |
| 2. | Indonesia | 2,559,471 | 1980 | |
| 3. | Brazil | 1,913,809 | 1980 | |
| 4. | Nigeria | 1,080,154 | 1980 | |
| 5. | Mexico | 922,764 | 1980 | |
| 6. | Turkey | 858,973 | 1980 | |
| 7. | Argentina | 721,689 | 1980 | |
| 8. | Philippines | 694,427 | 1980 | |
| 9. | Myanmar | 591,137 | 1980 | |
| 10. | Ethiopia | 537,960 | 1980 | |
| 11. | Colombia | 393,360 | 1980 | |
| 12. | Democratic Republic of the Congo | 368,911 | 1980 | |
| 13. | Nepal | 259,221 | 1980 | |
| 14. | Tanzania | 249,935 | 1980 | |
| 15. | Afghanistan | 219,852 | 1980 | |
| 16. | Malaysia | 202,073 | 1980 | |
| 17. | Kenya | 182,584 | 1980 | |
| 18. | Uganda | 167,115 | 1980 | |
| 19. | Ghana | 163,506 | 1980 | |
| 20. | Mozambique | 161,883 | 1980 | |
| 21. | Madagascar | 136,307 | 1980 | |
| 22. | Cote d'Ivoire | 127,125 | 1980 | |
| 23. | Cameroon | 118,170 | 1980 | |
| 24. | Mali | 103,901 | 1980 | |
| 25. | Cambodia | 98,687 | 1980 | |
| 26. | Angola | 98,598 | 1980 | |
| 27. | Dominican Republic | 89,060 | 1980 | |
| 28. | Burkina Faso | 87,952 | 1980 | |
| 29. | Niger | 87,593 | 1980 | |
| 30. | Haiti | 86,516 | 1980 | |
| 31. | Somalia | 81,085 | 1980 | |
| 32. | Malawi | 80,994 | 1980 | |
| 33. | Senegal | 74,647 | 1980 | |
| 34. | Zambia | 66,935 | 1980 | |
| 35. | Guinea | 63,476 | 1980 | |
| 36. | Chad | 62,960 | 1980 | |
| 37. | Rwanda | 62,928 | 1980 | |
| 38. | Sierra Leone | 56,853 | 1980 | |
| 39. | Papua New Guinea | 54,771 | 1980 | |
| 40. | Libya | 49,908 | 1980 | |
| 41. | Burundi | 48,984 | 1980 | |
| 42. | Paraguay | 48,821 | 1980 | |
| 43. | Lebanon | 48,692 | 1980 | |
| 44. | Honduras | 42,124 | 1980 | |
| 45. | Benin | 42,056 | 1980 | |
| 46. | Central African Republic | 41,438 | 1980 | |
| 47. | Eritrea | 40,347 | 1980 | |
| 48. | Nicaragua | 34,835 | 1980 | |
| 49. | Panama | 31,581 | 1980 | |
| 50. | Jordan | 28,809 | 1980 | |
| 51. | Liberia | 28,463 | 1980 | |
| 52. | Republic of Congo | 23,307 | 1980 | |
| 53. | Mauritania | 23,280 | 1980 | |
| 54. | Lesotho | 22,871 | 1980 | |
| 55. | Trinidad and Tobago | 18,132 | 1980 | |
| 56. | Namibia | 14,702 | 1980 | |
| 57. | Gabon | 12,971 | 1980 | |
| 58. | Guyana | 11,173 | 1980 | |
| 59. | Guinea-Bissau | 10,176 | 1980 | |
| 60. | Bhutan | 8,214 | 1980 | |
| 61. | Swaziland | 7,838 | 1980 | |
| 62. | Suriname | 5,874 | 1980 | |
| 63. | Djibouti | 4,852 | 1980 | |
| 64. | Comoros | 4,481 | 1980 | |
| 65. | Cape Verde | 4,182 | 1980 | |
| 66. | Barbados | 4,027 | 1980 | |
| 67. | Solomon Islands | 3,273 | 1980 | |
| 68. | The Bahamas | 2,802 | 1980 | |
| 69. | Belize | 2,085 | 1980 | |
| 70. | Western Sahara | 2,082 | 1980 | |
| 71. | Vanuatu | 1,628 | 1980 | |
| 72. | Saint Lucia | 1,547 | 1980 | |
| 73. | Seychelles | 1,156 | 1980 | |
| 74. | Saint Kitts and Nevis | 600 | 1980 | |
| 75. | Tuvalu | 168 | 1980 |