The World: Population - Age 15-19 (2018) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 28. | Afghanistan | 3,968,533 | 2018 | |
| 135. | Albania | 233,574 | 2018 | |
| 39. | Algeria | 2,840,514 | 2018 | |
| 196. | American Samoa | 6,790 | 2018 | |
| 203. | Andorra | 4,598 | 2018 | |
| 51. | Angola | 2,351,716 | 2018 | |
| 221. | Anguilla | 1,290 | 2018 | |
| 194. | Antigua and Barbuda | 7,951 | 2018 | |
| 33. | Argentina | 3,448,216 | 2018 | |
| 149. | Armenia | 158,869 | 2018 | |
| 197. | Aruba | 6,757 | 2018 | |
| 69. | Australia | 1,401,063 | 2018 | |
| 111. | Austria | 408,947 | 2018 | |
| 94. | Azerbaijan | 633,059 | 2018 | |
| 152. | Bahrain | 99,333 | 2018 | |
| 7. | Bangladesh | 17,906,248 | 2018 | |
| 185. | Barbados | 18,226 | 2018 | |
| 108. | Belarus | 451,966 | 2018 | |
| 101. | Belgium | 573,385 | 2018 | |
| 170. | Belize | 38,409 | 2018 | |
| 74. | Benin | 1,265,873 | 2018 | |
| 204. | Bermuda | 4,235 | 2018 | |
| 163. | Bhutan | 69,588 | 2018 | |
| 78. | Bolivia | 1,137,328 | 2018 | |
| 140. | Bosnia and Herzegovina | 215,134 | 2018 | |
| 134. | Botswana | 237,848 | 2018 | |
| 8. | Brazil | 17,713,644 | 2018 | |
| 214. | British Virgin Islands | 2,133 | 2018 | |
| 171. | Brunei | 35,488 | 2018 | |
| 118. | Bulgaria | 324,836 | 2018 | |
| 53. | Burkina Faso | 2,242,880 | 2018 | |
| 70. | Burundi | 1,389,090 | 2018 | |
| 67. | Cambodia | 1,451,206 | 2018 | |
| 48. | Cameroon | 2,467,519 | 2018 | |
| 55. | Canada | 1,961,720 | 2018 | |
| 168. | Cape Verde | 55,448 | 2018 | |
| 207. | Cayman Islands | 3,534 | 2018 | |
| 99. | Central African Republic | 607,620 | 2018 | |
| 66. | Chad | 1,474,356 | 2018 | |
| 200. | Channel Islands | 5,806 | 2018 | |
| 73. | Chile | 1,280,947 | 2018 | |
| 2. | China | 77,596,240 | 2018 | |
| 27. | Colombia | 4,008,466 | 2018 | |
| 157. | Comoros | 91,281 | 2018 | |
| 225. | Cook Islands | 720 | 2018 | |
| 114. | Costa Rica | 384,287 | 2018 | |
| 45. | Cote d'Ivoire | 2,720,840 | 2018 | |
| 137. | Croatia | 223,224 | 2018 | |
| 89. | Cuba | 690,843 | 2018 | |
| 165. | Cyprus | 68,700 | 2018 | |
| 107. | Czech Republic | 460,741 | 2018 | |
| 12. | Democratic Republic of the Congo | 9,684,223 | 2018 | |
| 116. | Denmark | 353,977 | 2018 | |
| 156. | Djibouti | 91,833 | 2018 | |
| 202. | Dominica | 4,913 | 2018 | |
| 81. | Dominican Republic | 993,339 | 2018 | |
| 151. | East Timor | 127,757 | 2018 | |
| 65. | Ecuador | 1,511,518 | 2018 | |
| 13. | Egypt | 8,453,002 | 2018 | |
| 98. | El Salvador | 611,185 | 2018 | |
| 159. | Equatorial Guinea | 84,999 | 2018 | |
| 86. | Eritrea | 783,653 | 2018 | |
| 167. | Estonia | 60,485 | 2018 | |
| 9. | Ethiopia | 12,244,632 | 2018 | |
| 208. | Faroe Islands | 3,525 | 2018 | |
| 190. | Federated States of Micronesia | 10,707 | 2018 | |
| 161. | Fiji | 71,944 | 2018 | |
| 127. | Finland | 288,128 | 2018 | |
| 26. | France | 4,065,983 | 2018 | |
| 179. | French Polynesia | 22,593 | 2018 | |
| 141. | Gabon | 199,760 | 2018 | |
| 139. | Gaza Strip | 219,459 | 2018 | |
| 136. | Georgia | 223,993 | 2018 | |
| 29. | Germany | 3,824,145 | 2018 | |
| 38. | Ghana | 2,868,163 | 2018 | |
| 216. | Gibraltar | 1,856 | 2018 | |
| 102. | Greece | 514,086 | 2018 | |
| 205. | Greenland | 4,081 | 2018 | |
| 192. | Grenada | 8,017 | 2018 | |
| 186. | Guam | 17,147 | 2018 | |
| 61. | Guatemala | 1,700,777 | 2018 | |
| 210. | Guernsey | 3,369 | 2018 | |
| 71. | Guinea | 1,357,215 | 2018 | |
| 143. | Guinea-Bissau | 194,932 | 2018 | |
| 160. | Guyana | 83,251 | 2018 | |
| 77. | Haiti | 1,143,280 | 2018 | |
| 82. | Honduras | 989,500 | 2018 | |
| 128. | Hong Kong | 282,224 | 2018 | |
| 104. | Hungary | 501,370 | 2018 | |
| 182. | Iceland | 21,412 | 2018 | |
| 1. | India | 116,848,872 | 2018 | |
| 3. | Indonesia | 22,475,386 | 2018 | |
| 18. | Iran | 5,918,938 | 2018 | |
| 30. | Iraq | 3,677,843 | 2018 | |
| 120. | Ireland | 310,332 | 2018 | |
| 201. | Isle of Man | 4,938 | 2018 | |
| 91. | Israel | 682,004 | 2018 | |
| 36. | Italy | 2,930,478 | 2018 | |
| 125. | Jamaica | 297,414 | 2018 | |
| 17. | Japan | 5,939,949 | 2018 |
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