The World: Population - Age 25-29 (2021) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 96. | Jordan | 619,845 | 2021 | |
| 64. | Kazakhstan | 1,492,268 | 2021 | |
| 27. | Kenya | 4,040,989 | 2021 | |
| 189. | Kiribati | 10,489 | 2021 | |
| 151. | Kosovo | 151,554 | 2021 | |
| 118. | Kuwait | 348,681 | 2021 | |
| 106. | Kyrgyzstan | 543,735 | 2021 | |
| 89. | Laos | 693,677 | 2021 | |
| 154. | Latvia | 115,174 | 2021 | |
| 122. | Lebanon | 330,072 | 2021 | |
| 146. | Lesotho | 176,415 | 2021 | |
| 125. | Liberia | 319,949 | 2021 | |
| 101. | Libya | 589,680 | 2021 | |
| 215. | Liechtenstein | 2,418 | 2021 | |
| 143. | Lithuania | 217,980 | 2021 | |
| 173. | Luxembourg | 39,113 | 2021 | |
| 170. | Macau | 45,133 | 2021 | |
| 152. | Macedonia | 147,356 | 2021 | |
| 49. | Madagascar | 2,319,393 | 2021 | |
| 58. | Malawi | 1,687,683 | 2021 | |
| 46. | Malaysia | 2,536,479 | 2021 | |
| 172. | Maldives | 43,707 | 2021 | |
| 69. | Mali | 1,374,070 | 2021 | |
| 177. | Malta | 26,017 | 2021 | |
| 202. | Marshall Islands | 5,309 | 2021 | |
| 120. | Mauritania | 332,788 | 2021 | |
| 156. | Mauritius | 105,134 | 2021 | |
| 186. | Mayotte | 16,101 | 2021 | |
| 9. | Mexico | 10,044,136 | 2021 | |
| 142. | Moldova | 221,897 | 2021 | |
| 219. | Monaco | 1,384 | 2021 | |
| 133. | Mongolia | 291,488 | 2021 | |
| 175. | Montenegro | 33,742 | 2021 | |
| 227. | Montserrat | 348 | 2021 | |
| 40. | Morocco | 2,788,725 | 2021 | |
| 47. | Mozambique | 2,454,579 | 2021 | |
| 20. | Myanmar | 5,043,545 | 2021 | |
| 140. | Namibia | 243,442 | 2021 | |
| 223. | Nauru | 688 | 2021 | |
| 30. | Nepal | 3,529,673 | 2021 | |
| 72. | Netherlands | 1,096,093 | 2021 | |
| 188. | Netherlands Antilles | 11,295 | 2021 | |
| 178. | New Caledonia | 23,696 | 2021 | |
| 128. | New Zealand | 305,282 | 2021 | |
| 92. | Nicaragua | 647,719 | 2021 | |
| 59. | Niger | 1,643,431 | 2021 | |
| 7. | Nigeria | 16,295,363 | 2021 | |
| 53. | North Korea | 2,043,808 | 2021 | |
| 211. | Northern Mariana Islands | 3,443 | 2021 | |
| 124. | Norway | 324,034 | 2021 | |
| 117. | Oman | 376,227 | 2021 | |
| 5. | Pakistan | 20,592,126 | 2021 | |
| 217. | Palau | 1,987 | 2021 | |
| 130. | Panama | 304,466 | 2021 | |
| 94. | Papua New Guinea | 628,108 | 2021 | |
| 90. | Paraguay | 690,710 | 2021 | |
| 39. | Peru | 2,865,043 | 2021 | |
| 10. | Philippines | 9,901,372 | 2021 | |
| 50. | Poland | 2,302,323 | 2021 | |
| 95. | Portugal | 621,827 | 2021 | |
| 137. | Puerto Rico | 259,146 | 2021 | |
| 126. | Qatar | 318,800 | 2021 | |
| 112. | Republic of Congo | 452,146 | 2021 | |
| 71. | Romania | 1,182,749 | 2021 | |
| 16. | Russia | 7,168,554 | 2021 | |
| 75. | Rwanda | 1,060,123 | 2021 | |
| 225. | Saint Barthélemy | 511 | 2021 | |
| 226. | Saint Helena | 462 | 2021 | |
| 210. | Saint Kitts and Nevis | 3,673 | 2021 | |
| 187. | Saint Lucia | 12,233 | 2021 | |
| 214. | Saint Martin | 2,436 | 2021 | |
| 228. | Saint Pierre and Miquelon | 198 | 2021 | |
| 196. | Saint Vincent and the Grenadines | 7,491 | 2021 | |
| 183. | Samoa | 17,822 | 2021 | |
| 218. | San Marino | 1,932 | 2021 | |
| 185. | Sao Tome and Principe | 16,115 | 2021 | |
| 36. | Saudi Arabia | 3,103,629 | 2021 | |
| 70. | Senegal | 1,311,303 | 2021 | |
| 113. | Serbia | 427,754 | 2021 | |
| 198. | Seychelles | 7,035 | 2021 | |
| 109. | Sierra Leone | 506,833 | 2021 | |
| 91. | Singapore | 653,860 | 2021 | |
| 212. | Sint Maarten | 3,079 | 2021 | |
| 119. | Slovakia | 342,648 | 2021 | |
| 157. | Slovenia | 99,605 | 2021 | |
| 166. | Solomon Islands | 59,637 | 2021 | |
| 84. | Somalia | 846,447 | 2021 | |
| 23. | South Africa | 4,626,546 | 2021 | |
| 32. | South Korea | 3,444,103 | 2021 | |
| 43. | Spain | 2,612,372 | 2021 | |
| 60. | Sri Lanka | 1,634,533 | 2021 | |
| 21. | Sudan | 4,814,518 | 2021 | |
| 169. | Suriname | 47,917 | 2021 | |
| 150. | Swaziland | 152,830 | 2021 | |
| 97. | Sweden | 615,454 | 2021 | |
| 111. | Switzerland | 484,923 | 2021 | |
| 52. | Syria | 2,183,327 | 2021 | |
| 61. | Taiwan | 1,588,082 | 2021 | |
| 86. | Tajikistan | 769,830 | 2021 | |
| 22. | Tanzania | 4,667,082 | 2021 |
