The World: Population - Age 5-9 (1981) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 1. | Indonesia | 20,798,172 | 1981 | |
| 2. | Brazil | 16,277,178 | 1981 | |
| 3. | United States of America | 16,060,121 | 1981 | |
| 4. | Bangladesh | 14,327,627 | 1981 | |
| 5. | Pakistan | 12,448,588 | 1981 | |
| 6. | Nigeria | 11,263,328 | 1981 | |
| 7. | Mexico | 10,464,590 | 1981 | |
| 8. | Philippines | 7,231,162 | 1981 | |
| 9. | Turkey | 6,033,760 | 1981 | |
| 10. | Ethiopia | 5,436,431 | 1981 | |
| 11. | Myanmar | 4,440,597 | 1981 | |
| 12. | Democratic Republic of the Congo | 4,370,069 | 1981 | |
| 13. | Colombia | 3,556,665 | 1981 | |
| 14. | Tanzania | 2,996,084 | 1981 | |
| 15. | Argentina | 2,917,211 | 1981 | |
| 16. | Kenya | 2,718,022 | 1981 | |
| 17. | Peru | 2,443,203 | 1981 | |
| 18. | Nepal | 2,068,337 | 1981 | |
| 19. | Afghanistan | 2,004,656 | 1981 | |
| 20. | Uganda | 1,991,116 | 1981 | |
| 21. | Malaysia | 1,869,090 | 1981 | |
| 22. | Mozambique | 1,824,705 | 1981 | |
| 23. | Sri Lanka | 1,757,034 | 1981 | |
| 24. | Ghana | 1,739,380 | 1981 | |
| 25. | Cote d'Ivoire | 1,458,492 | 1981 | |
| 26. | Syria | 1,430,027 | 1981 | |
| 27. | Cameroon | 1,325,940 | 1981 | |
| 28. | Madagascar | 1,279,194 | 1981 | |
| 29. | Angola | 1,080,059 | 1981 | |
| 30. | Guatemala | 1,032,207 | 1981 | |
| 31. | Mali | 1,006,673 | 1981 | |
| 32. | Burkina Faso | 981,482 | 1981 | |
| 33. | Malawi | 955,121 | 1981 | |
| 34. | Niger | 909,022 | 1981 | |
| 35. | Zambia | 908,363 | 1981 | |
| 36. | Cambodia | 894,224 | 1981 | |
| 37. | Somalia | 872,937 | 1981 | |
| 38. | Senegal | 846,949 | 1981 | |
| 39. | Dominican Republic | 798,570 | 1981 | |
| 40. | Rwanda | 774,924 | 1981 | |
| 41. | Haiti | 763,632 | 1981 | |
| 42. | Burundi | 647,933 | 1981 | |
| 43. | Chad | 632,024 | 1981 | |
| 44. | Guinea | 630,992 | 1981 | |
| 45. | Benin | 572,585 | 1981 | |
| 46. | Honduras | 552,678 | 1981 | |
| 47. | Serbia | 532,436 | 1981 | |
| 48. | Libya | 509,506 | 1981 | |
| 49. | Sierra Leone | 479,426 | 1981 | |
| 50. | Nicaragua | 457,333 | 1981 | |
| 51. | Paraguay | 457,106 | 1981 | |
| 52. | Papua New Guinea | 451,542 | 1981 | |
| 53. | Togo | 415,794 | 1981 | |
| 54. | Eritrea | 403,989 | 1981 | |
| 55. | Lebanon | 395,344 | 1981 | |
| 56. | Jordan | 378,008 | 1981 | |
| 57. | Central African Republic | 340,836 | 1981 | |
| 58. | Liberia | 267,353 | 1981 | |
| 59. | Panama | 264,711 | 1981 | |
| 60. | Republic of Congo | 252,376 | 1981 | |
| 61. | Mauritania | 222,471 | 1981 | |
| 62. | Kosovo | 218,670 | 1981 | |
| 63. | Lesotho | 188,902 | 1981 | |
| 64. | Namibia | 162,533 | 1981 | |
| 65. | Botswana | 141,172 | 1981 | |
| 66. | Trinidad and Tobago | 122,663 | 1981 | |
| 67. | Guinea-Bissau | 120,005 | 1981 | |
| 68. | Guyana | 104,449 | 1981 | |
| 69. | Swaziland | 98,270 | 1981 | |
| 70. | Gabon | 90,413 | 1981 | |
| 71. | Bhutan | 62,286 | 1981 | |
| 72. | Comoros | 60,074 | 1981 | |
| 73. | Suriname | 47,913 | 1981 | |
| 74. | Djibouti | 47,033 | 1981 | |
| 75. | Cape Verde | 42,666 | 1981 | |
| 76. | Bahrain | 41,894 | 1981 | |
| 77. | Solomon Islands | 40,373 | 1981 | |
| 78. | The Bahamas | 27,714 | 1981 | |
| 79. | Barbados | 24,837 | 1981 | |
| 80. | Brunei | 24,416 | 1981 | |
| 81. | Samoa | 24,092 | 1981 | |
| 82. | Belize | 21,394 | 1981 | |
| 83. | Western Sahara | 19,608 | 1981 | |
| 84. | Saint Lucia | 18,245 | 1981 | |
| 85. | Vanuatu | 17,484 | 1981 | |
| 86. | Sao Tome and Principe | 15,032 | 1981 | |
| 87. | Grenada | 13,579 | 1981 | |
| 88. | Dominica | 8,585 | 1981 | |
| 89. | Seychelles | 7,988 | 1981 | |
| 90. | Saint Kitts and Nevis | 5,366 | 1981 | |
| 91. | Aruba | 4,700 | 1981 | |
| 92. | Tuvalu | 678 | 1981 |
