The World: Population - Age 25-29 (2021) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 128. | New Zealand | 305,282 | 2021 | |
| 127. | Jamaica | 309,907 | 2021 | |
| 126. | Qatar | 318,800 | 2021 | |
| 125. | Liberia | 319,949 | 2021 | |
| 124. | Norway | 324,034 | 2021 | |
| 123. | Finland | 327,900 | 2021 | |
| 122. | Lebanon | 330,072 | 2021 | |
| 121. | Bulgaria | 330,889 | 2021 | |
| 120. | Mauritania | 332,788 | 2021 | |
| 119. | Slovakia | 342,648 | 2021 | |
| 118. | Kuwait | 348,681 | 2021 | |
| 117. | Oman | 376,227 | 2021 | |
| 116. | Denmark | 383,450 | 2021 | |
| 115. | Hong Kong | 420,503 | 2021 | |
| 114. | Costa Rica | 420,604 | 2021 | |
| 113. | Serbia | 427,754 | 2021 | |
| 112. | Republic of Congo | 452,146 | 2021 | |
| 111. | Switzerland | 484,923 | 2021 | |
| 110. | Central African Republic | 504,534 | 2021 | |
| 109. | Sierra Leone | 506,833 | 2021 | |
| 108. | Austria | 512,271 | 2021 | |
| 107. | Turkmenistan | 528,419 | 2021 | |
| 106. | Kyrgyzstan | 543,735 | 2021 | |
| 105. | Greece | 557,271 | 2021 | |
| 104. | Belarus | 559,930 | 2021 | |
| 103. | Czech Republic | 564,151 | 2021 | |
| 102. | El Salvador | 573,763 | 2021 | |
| 101. | Libya | 589,680 | 2021 | |
| 100. | Hungary | 591,903 | 2021 | |
| 99. | Israel | 611,462 | 2021 | |
| 98. | Eritrea | 614,787 | 2021 | |
| 97. | Sweden | 615,454 | 2021 | |
| 96. | Jordan | 619,845 | 2021 | |
| 95. | Portugal | 621,827 | 2021 | |
| 94. | Papua New Guinea | 628,108 | 2021 | |
| 93. | Belgium | 631,650 | 2021 | |
| 92. | Nicaragua | 647,719 | 2021 | |
| 91. | Singapore | 653,860 | 2021 | |
| 90. | Paraguay | 690,710 | 2021 | |
| 89. | Laos | 693,677 | 2021 | |
| 88. | Cuba | 701,531 | 2021 | |
| 87. | Togo | 709,100 | 2021 | |
| 86. | Tajikistan | 769,830 | 2021 | |
| 85. | Tunisia | 834,474 | 2021 | |
| 84. | Somalia | 846,447 | 2021 | |
| 83. | Azerbaijan | 876,262 | 2021 | |
| 82. | Honduras | 879,503 | 2021 | |
| 81. | Dominican Republic | 926,626 | 2021 | |
| 80. | United Arab Emirates | 940,549 | 2021 | |
| 79. | Benin | 977,229 | 2021 | |
| 78. | Bolivia | 1,025,353 | 2021 | |
| 77. | Haiti | 1,035,690 | 2021 | |
| 76. | Burundi | 1,049,418 | 2021 | |
| 75. | Rwanda | 1,060,123 | 2021 | |
| 74. | Guinea | 1,068,900 | 2021 | |
| 73. | Chad | 1,075,637 | 2021 | |
| 72. | Netherlands | 1,096,093 | 2021 | |
| 71. | Romania | 1,182,749 | 2021 | |
| 70. | Senegal | 1,311,303 | 2021 | |
| 69. | Mali | 1,374,070 | 2021 | |
| 68. | Chile | 1,406,376 | 2021 | |
| 67. | Zambia | 1,428,040 | 2021 | |
| 66. | Ecuador | 1,438,782 | 2021 | |
| 65. | Zimbabwe | 1,455,755 | 2021 | |
| 64. | Kazakhstan | 1,492,268 | 2021 | |
| 63. | Guatemala | 1,567,057 | 2021 | |
| 62. | Cambodia | 1,579,866 | 2021 | |
| 61. | Taiwan | 1,588,082 | 2021 | |
| 60. | Sri Lanka | 1,634,533 | 2021 | |
| 59. | Niger | 1,643,431 | 2021 | |
| 58. | Malawi | 1,687,683 | 2021 | |
| 57. | Australia | 1,703,397 | 2021 | |
| 56. | Burkina Faso | 1,759,276 | 2021 | |
| 55. | Angola | 1,853,842 | 2021 | |
| 54. | Cameroon | 2,004,270 | 2021 | |
| 53. | North Korea | 2,043,808 | 2021 | |
| 52. | Syria | 2,183,327 | 2021 | |
| 51. | Cote d'Ivoire | 2,286,688 | 2021 | |
| 50. | Poland | 2,302,323 | 2021 | |
| 49. | Madagascar | 2,319,393 | 2021 | |
| 48. | Canada | 2,395,446 | 2021 | |
| 47. | Mozambique | 2,454,579 | 2021 | |
| 46. | Malaysia | 2,536,479 | 2021 | |
| 45. | Ukraine | 2,547,044 | 2021 | |
| 44. | Ghana | 2,579,180 | 2021 | |
| 43. | Spain | 2,612,372 | 2021 | |
| 42. | Yemen | 2,654,712 | 2021 | |
| 41. | Venezuela | 2,719,117 | 2021 | |
| 40. | Morocco | 2,788,725 | 2021 | |
| 39. | Peru | 2,865,043 | 2021 | |
| 38. | Uzbekistan | 3,027,445 | 2021 | |
| 37. | Iraq | 3,101,231 | 2021 | |
| 36. | Saudi Arabia | 3,103,629 | 2021 | |
| 35. | Italy | 3,282,047 | 2021 | |
| 34. | Afghanistan | 3,302,636 | 2021 | |
| 33. | Argentina | 3,327,869 | 2021 | |
| 32. | South Korea | 3,444,103 | 2021 | |
| 31. | Algeria | 3,501,430 | 2021 | |
| 30. | Nepal | 3,529,673 | 2021 | |
| 29. | Uganda | 3,796,906 | 2021 |
