The World: Population - Age 15-19 (2021) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 174. | Mayotte | 31,385 | 2021 | |
| 155. | Mauritius | 95,258 | 2021 | |
| 110. | Mauritania | 425,426 | 2021 | |
| 193. | Marshall Islands | 7,981 | 2021 | |
| 184. | Malta | 20,368 | 2021 | |
| 57. | Mali | 2,008,147 | 2021 | |
| 176. | Maldives | 28,308 | 2021 | |
| 40. | Malaysia | 2,837,421 | 2021 | |
| 54. | Malawi | 2,294,291 | 2021 | |
| 36. | Madagascar | 3,065,037 | 2021 | |
| 151. | Macedonia | 119,580 | 2021 | |
| 173. | Macau | 31,471 | 2021 | |
| 172. | Luxembourg | 33,149 | 2021 | |
| 149. | Lithuania | 148,496 | 2021 | |
| 214. | Liechtenstein | 2,046 | 2021 | |
| 89. | Libya | 733,929 | 2021 | |
| 102. | Liberia | 547,588 | 2021 | |
| 142. | Lesotho | 195,964 | 2021 | |
| 124. | Lebanon | 293,888 | 2021 | |
| 156. | Latvia | 95,174 | 2021 | |
| 87. | Laos | 771,430 | 2021 | |
| 104. | Kyrgyzstan | 518,812 | 2021 | |
| 144. | Kuwait | 193,043 | 2021 | |
| 147. | Kosovo | 161,823 | 2021 | |
| 188. | Kiribati | 10,829 | 2021 | |
| 17. | Kenya | 6,141,579 | 2021 | |
| 73. | Kazakhstan | 1,299,746 | 2021 | |
| 92. | Jordan | 698,527 | 2021 | |
| 21. | Japan | 5,659,286 | 2021 | |
| 126. | Jamaica | 285,711 | 2021 | |
| 38. | Italy | 2,969,151 | 2021 | |
| 90. | Israel | 709,366 | 2021 | |
| 201. | Isle of Man | 4,892 | 2021 | |
| 119. | Ireland | 326,665 | 2021 | |
| 28. | Iraq | 3,869,814 | 2021 | |
| 19. | Iran | 6,065,644 | 2021 | |
| 4. | Indonesia | 22,323,772 | 2021 | |
| 1. | India | 116,685,696 | 2021 | |
| 183. | Iceland | 20,796 | 2021 | |
| 105. | Hungary | 500,798 | 2021 | |
| 130. | Hong Kong | 272,923 | 2021 | |
| 81. | Honduras | 988,816 | 2021 | |
| 77. | Haiti | 1,125,332 | 2021 | |
| 160. | Guyana | 77,737 | 2021 | |
| 140. | Guinea-Bissau | 205,389 | 2021 | |
| 70. | Guinea | 1,456,662 | 2021 | |
| 210. | Guernsey | 3,266 | 2021 | |
| 63. | Guatemala | 1,708,830 | 2021 | |
| 186. | Guam | 16,088 | 2021 | |
| 192. | Grenada | 8,231 | 2021 | |
| 205. | Greenland | 3,997 | 2021 | |
| 103. | Greece | 521,226 | 2021 | |
| 216. | Gibraltar | 1,865 | 2021 | |
| 37. | Ghana | 2,984,443 | 2021 | |
| 31. | Germany | 3,607,326 | 2021 | |
| 137. | Georgia | 216,670 | 2021 | |
| 131. | Gaza Strip | 246,205 | 2021 | |
| 139. | Gabon | 213,492 | 2021 | |
| 181. | French Polynesia | 21,530 | 2021 | |
| 26. | France | 4,113,820 | 2021 | |
| 128. | Finland | 281,755 | 2021 | |
| 161. | Fiji | 74,755 | 2021 | |
| 190. | Federated States of Micronesia | 10,075 | 2021 | |
| 208. | Faroe Islands | 3,541 | 2021 | |
| 9. | Ethiopia | 13,677,104 | 2021 | |
| 167. | Estonia | 62,181 | 2021 | |
| 85. | Eritrea | 826,741 | 2021 | |
| 157. | Equatorial Guinea | 91,422 | 2021 | |
| 100. | El Salvador | 560,100 | 2021 | |
| 13. | Egypt | 8,965,409 | 2021 | |
| 69. | Ecuador | 1,493,692 | 2021 | |
| 150. | East Timor | 129,483 | 2021 | |
| 82. | Dominican Republic | 957,877 | 2021 | |
| 202. | Dominica | 4,697 | 2021 | |
| 158. | Djibouti | 90,654 | 2021 | |
| 117. | Denmark | 341,284 | 2021 | |
| 12. | Democratic Republic of the Congo | 10,317,913 | 2021 | |
| 107. | Czech Republic | 468,075 | 2021 | |
| 166. | Cyprus | 66,700 | 2021 | |
| 95. | Cuba | 626,144 | 2021 | |
| 138. | Croatia | 215,585 | 2021 | |
| 41. | Cote d'Ivoire | 2,805,361 | 2021 | |
| 114. | Costa Rica | 365,818 | 2021 | |
| 224. | Cook Islands | 602 | 2021 | |
| 152. | Comoros | 101,086 | 2021 | |
| 27. | Colombia | 3,915,798 | 2021 | |
| 2. | China | 73,984,488 | 2021 | |
| 75. | Chile | 1,239,862 | 2021 | |
| 200. | Channel Islands | 5,549 | 2021 | |
| 66. | Chad | 1,532,804 | 2021 | |
| 94. | Central African Republic | 646,235 | 2021 | |
| 206. | Cayman Islands | 3,611 | 2021 | |
| 168. | Cape Verde | 53,775 | 2021 | |
| 58. | Canada | 1,982,097 | 2021 | |
| 45. | Cameroon | 2,614,399 | 2021 | |
| 67. | Cambodia | 1,532,046 | 2021 | |
| 68. | Burundi | 1,516,581 | 2021 | |
| 49. | Burkina Faso | 2,448,005 | 2021 | |
| 118. | Bulgaria | 329,195 | 2021 | |
| 171. | Brunei | 34,220 | 2021 |
