The World: Population - Age 25-29 (2020) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 186. | Mayotte | 14,948 | 2020 | |
| 156. | Mauritius | 106,807 | 2020 | |
| 123. | Mauritania | 325,453 | 2020 | |
| 202. | Marshall Islands | 5,195 | 2020 | |
| 177. | Malta | 26,697 | 2020 | |
| 69. | Mali | 1,327,604 | 2020 | |
| 171. | Maldives | 46,175 | 2020 | |
| 46. | Malaysia | 2,509,470 | 2020 | |
| 59. | Malawi | 1,638,724 | 2020 | |
| 50. | Madagascar | 2,256,299 | 2020 | |
| 152. | Macedonia | 147,448 | 2020 | |
| 170. | Macau | 46,501 | 2020 | |
| 173. | Luxembourg | 38,484 | 2020 | |
| 142. | Lithuania | 233,126 | 2020 | |
| 216. | Liechtenstein | 2,389 | 2020 | |
| 103. | Libya | 593,463 | 2020 | |
| 131. | Liberia | 299,676 | 2020 | |
| 146. | Lesotho | 179,544 | 2020 | |
| 121. | Lebanon | 339,442 | 2020 | |
| 153. | Latvia | 128,620 | 2020 | |
| 89. | Laos | 690,462 | 2020 | |
| 106. | Kyrgyzstan | 554,772 | 2020 | |
| 120. | Kuwait | 343,857 | 2020 | |
| 148. | Kosovo | 156,241 | 2020 | |
| 189. | Kiribati | 10,276 | 2020 | |
| 27. | Kenya | 4,010,522 | 2020 | |
| 63. | Kazakhstan | 1,549,496 | 2020 | |
| 97. | Jordan | 610,393 | 2020 | |
| 18. | Japan | 6,122,481 | 2020 | |
| 128. | Jamaica | 308,070 | 2020 | |
| 34. | Italy | 3,315,948 | 2020 | |
| 99. | Israel | 605,184 | 2020 | |
| 201. | Isle of Man | 5,380 | 2020 | |
| 129. | Ireland | 305,158 | 2020 | |
| 38. | Iraq | 3,027,924 | 2020 | |
| 13. | Iran | 8,199,770 | 2020 | |
| 4. | Indonesia | 20,833,412 | 2020 | |
| 1. | India | 109,224,568 | 2020 | |
| 180. | Iceland | 23,503 | 2020 | |
| 98. | Hungary | 607,659 | 2020 | |
| 115. | Hong Kong | 423,562 | 2020 | |
| 83. | Honduras | 864,033 | 2020 | |
| 78. | Haiti | 1,012,289 | 2020 | |
| 162. | Guyana | 69,245 | 2020 | |
| 147. | Guinea-Bissau | 157,967 | 2020 | |
| 75. | Guinea | 1,033,532 | 2020 | |
| 206. | Guernsey | 4,319 | 2020 | |
| 64. | Guatemala | 1,536,580 | 2020 | |
| 184. | Guam | 15,988 | 2020 | |
| 191. | Grenada | 8,335 | 2020 | |
| 203. | Greenland | 4,750 | 2020 | |
| 105. | Greece | 562,052 | 2020 | |
| 214. | Gibraltar | 2,477 | 2020 | |
| 45. | Ghana | 2,586,824 | 2020 | |
| 24. | Germany | 4,551,949 | 2020 | |
| 126. | Georgia | 312,834 | 2020 | |
| 145. | Gaza Strip | 184,614 | 2020 | |
| 151. | Gabon | 151,689 | 2020 | |
| 178. | French Polynesia | 23,778 | 2020 | |
| 28. | France | 4,004,444 | 2020 | |
| 122. | Finland | 331,734 | 2020 | |
| 161. | Fiji | 72,682 | 2020 | |
| 192. | Federated States of Micronesia | 8,290 | 2020 | |
| 209. | Faroe Islands | 3,873 | 2020 | |
| 11. | Ethiopia | 8,689,322 | 2020 | |
| 163. | Estonia | 67,348 | 2020 | |
| 101. | Eritrea | 598,014 | 2020 | |
| 164. | Equatorial Guinea | 66,102 | 2020 | |
| 104. | El Salvador | 567,436 | 2020 | |
| 16. | Egypt | 7,623,443 | 2020 | |
| 67. | Ecuador | 1,415,380 | 2020 | |
| 154. | East Timor | 126,426 | 2020 | |
| 82. | Dominican Republic | 916,823 | 2020 | |
| 200. | Dominica | 6,000 | 2020 | |
| 158. | Djibouti | 95,905 | 2020 | |
| 116. | Denmark | 379,155 | 2020 | |
| 15. | Democratic Republic of the Congo | 7,682,253 | 2020 | |
| 100. | Czech Republic | 598,552 | 2020 | |
| 155. | Cyprus | 108,130 | 2020 | |
| 87. | Cuba | 731,366 | 2020 | |
| 136. | Croatia | 271,943 | 2020 | |
| 51. | Cote d'Ivoire | 2,250,367 | 2020 | |
| 114. | Costa Rica | 423,899 | 2020 | |
| 224. | Cook Islands | 599 | 2020 | |
| 165. | Comoros | 64,024 | 2020 | |
| 26. | Colombia | 4,146,772 | 2020 | |
| 2. | China | 101,735,112 | 2020 | |
| 66. | Chile | 1,427,770 | 2020 | |
| 190. | Channel Islands | 8,520 | 2020 | |
| 73. | Chad | 1,038,547 | 2020 | |
| 110. | Central African Republic | 497,259 | 2020 | |
| 207. | Cayman Islands | 4,117 | 2020 | |
| 167. | Cape Verde | 54,767 | 2020 | |
| 47. | Canada | 2,417,255 | 2020 | |
| 54. | Cameroon | 1,989,152 | 2020 | |
| 60. | Cambodia | 1,629,403 | 2020 | |
| 77. | Burundi | 1,014,291 | 2020 | |
| 57. | Burkina Faso | 1,701,243 | 2020 | |
| 119. | Bulgaria | 352,121 | 2020 | |
| 172. | Brunei | 42,869 | 2020 |
