The World: Population - Age 25-29 (2021) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 186. | Mayotte | 16,101 | 2021 | |
| 156. | Mauritius | 105,134 | 2021 | |
| 120. | Mauritania | 332,788 | 2021 | |
| 202. | Marshall Islands | 5,309 | 2021 | |
| 177. | Malta | 26,017 | 2021 | |
| 69. | Mali | 1,374,070 | 2021 | |
| 172. | Maldives | 43,707 | 2021 | |
| 46. | Malaysia | 2,536,479 | 2021 | |
| 58. | Malawi | 1,687,683 | 2021 | |
| 49. | Madagascar | 2,319,393 | 2021 | |
| 152. | Macedonia | 147,356 | 2021 | |
| 170. | Macau | 45,133 | 2021 | |
| 173. | Luxembourg | 39,113 | 2021 | |
| 143. | Lithuania | 217,980 | 2021 | |
| 215. | Liechtenstein | 2,418 | 2021 | |
| 101. | Libya | 589,680 | 2021 | |
| 125. | Liberia | 319,949 | 2021 | |
| 146. | Lesotho | 176,415 | 2021 | |
| 122. | Lebanon | 330,072 | 2021 | |
| 154. | Latvia | 115,174 | 2021 | |
| 89. | Laos | 693,677 | 2021 | |
| 106. | Kyrgyzstan | 543,735 | 2021 | |
| 118. | Kuwait | 348,681 | 2021 | |
| 151. | Kosovo | 151,554 | 2021 | |
| 189. | Kiribati | 10,489 | 2021 | |
| 27. | Kenya | 4,040,989 | 2021 | |
| 64. | Kazakhstan | 1,492,268 | 2021 | |
| 96. | Jordan | 619,845 | 2021 | |
| 18. | Japan | 6,152,034 | 2021 | |
| 127. | Jamaica | 309,907 | 2021 | |
| 35. | Italy | 3,282,047 | 2021 | |
| 99. | Israel | 611,462 | 2021 | |
| 201. | Isle of Man | 5,327 | 2021 | |
| 129. | Ireland | 305,227 | 2021 | |
| 37. | Iraq | 3,101,231 | 2021 | |
| 14. | Iran | 7,681,445 | 2021 | |
| 4. | Indonesia | 21,102,848 | 2021 | |
| 1. | India | 110,660,968 | 2021 | |
| 180. | Iceland | 23,196 | 2021 | |
| 100. | Hungary | 591,903 | 2021 | |
| 115. | Hong Kong | 420,503 | 2021 | |
| 82. | Honduras | 879,503 | 2021 | |
| 77. | Haiti | 1,035,690 | 2021 | |
| 161. | Guyana | 72,069 | 2021 | |
| 147. | Guinea-Bissau | 161,137 | 2021 | |
| 74. | Guinea | 1,068,900 | 2021 | |
| 206. | Guernsey | 4,194 | 2021 | |
| 63. | Guatemala | 1,567,057 | 2021 | |
| 184. | Guam | 16,183 | 2021 | |
| 193. | Grenada | 8,182 | 2021 | |
| 203. | Greenland | 4,671 | 2021 | |
| 105. | Greece | 557,271 | 2021 | |
| 216. | Gibraltar | 2,376 | 2021 | |
| 44. | Ghana | 2,579,180 | 2021 | |
| 24. | Germany | 4,432,498 | 2021 | |
| 132. | Georgia | 293,397 | 2021 | |
| 145. | Gaza Strip | 184,165 | 2021 | |
| 149. | Gabon | 155,000 | 2021 | |
| 179. | French Polynesia | 23,209 | 2021 | |
| 28. | France | 3,981,359 | 2021 | |
| 123. | Finland | 327,900 | 2021 | |
| 160. | Fiji | 72,868 | 2021 | |
| 192. | Federated States of Micronesia | 8,212 | 2021 | |
| 209. | Faroe Islands | 3,787 | 2021 | |
| 11. | Ethiopia | 8,910,101 | 2021 | |
| 165. | Estonia | 61,593 | 2021 | |
| 98. | Eritrea | 614,787 | 2021 | |
| 163. | Equatorial Guinea | 68,052 | 2021 | |
| 102. | El Salvador | 573,763 | 2021 | |
| 15. | Egypt | 7,614,054 | 2021 | |
| 66. | Ecuador | 1,438,782 | 2021 | |
| 153. | East Timor | 125,435 | 2021 | |
| 81. | Dominican Republic | 926,626 | 2021 | |
| 200. | Dominica | 5,946 | 2021 | |
| 158. | Djibouti | 96,337 | 2021 | |
| 116. | Denmark | 383,450 | 2021 | |
| 13. | Democratic Republic of the Congo | 7,958,842 | 2021 | |
| 103. | Czech Republic | 564,151 | 2021 | |
| 155. | Cyprus | 107,157 | 2021 | |
| 88. | Cuba | 701,531 | 2021 | |
| 135. | Croatia | 274,703 | 2021 | |
| 51. | Cote d'Ivoire | 2,286,688 | 2021 | |
| 114. | Costa Rica | 420,604 | 2021 | |
| 224. | Cook Islands | 588 | 2021 | |
| 164. | Comoros | 65,355 | 2021 | |
| 26. | Colombia | 4,148,080 | 2021 | |
| 2. | China | 98,713,632 | 2021 | |
| 68. | Chile | 1,406,376 | 2021 | |
| 190. | Channel Islands | 8,506 | 2021 | |
| 73. | Chad | 1,075,637 | 2021 | |
| 110. | Central African Republic | 504,534 | 2021 | |
| 207. | Cayman Islands | 4,162 | 2021 | |
| 168. | Cape Verde | 54,717 | 2021 | |
| 48. | Canada | 2,395,446 | 2021 | |
| 54. | Cameroon | 2,004,270 | 2021 | |
| 62. | Cambodia | 1,579,866 | 2021 | |
| 76. | Burundi | 1,049,418 | 2021 | |
| 56. | Burkina Faso | 1,759,276 | 2021 | |
| 121. | Bulgaria | 330,889 | 2021 | |
| 171. | Brunei | 44,125 | 2021 |
