The World: Population - Age 15-19 (2021) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 101. | Belgium | 559,253 | 2021 | |
| 102. | Liberia | 547,588 | 2021 | |
| 103. | Greece | 521,226 | 2021 | |
| 104. | Kyrgyzstan | 518,812 | 2021 | |
| 105. | Hungary | 500,798 | 2021 | |
| 106. | Sweden | 493,035 | 2021 | |
| 107. | Czech Republic | 468,075 | 2021 | |
| 108. | Belarus | 443,439 | 2021 | |
| 109. | Turkmenistan | 434,453 | 2021 | |
| 110. | Mauritania | 425,426 | 2021 | |
| 111. | Switzerland | 391,659 | 2021 | |
| 112. | Austria | 390,784 | 2021 | |
| 113. | Serbia | 380,065 | 2021 | |
| 114. | Costa Rica | 365,818 | 2021 | |
| 115. | United Arab Emirates | 363,052 | 2021 | |
| 116. | Singapore | 361,498 | 2021 | |
| 117. | Denmark | 341,284 | 2021 | |
| 118. | Bulgaria | 329,195 | 2021 | |
| 119. | Ireland | 326,665 | 2021 | |
| 120. | Panama | 322,723 | 2021 | |
| 121. | West Bank | 302,245 | 2021 | |
| 122. | New Zealand | 298,732 | 2021 | |
| 123. | Oman | 294,465 | 2021 | |
| 124. | Lebanon | 293,888 | 2021 | |
| 125. | Norway | 286,369 | 2021 | |
| 126. | Jamaica | 285,711 | 2021 | |
| 127. | Slovakia | 283,830 | 2021 | |
| 128. | Finland | 281,755 | 2021 | |
| 129. | Mongolia | 274,376 | 2021 | |
| 130. | Hong Kong | 272,923 | 2021 | |
| 131. | Gaza Strip | 246,205 | 2021 | |
| 132. | Uruguay | 241,572 | 2021 | |
| 133. | Namibia | 238,891 | 2021 | |
| 134. | Botswana | 238,448 | 2021 | |
| 135. | Puerto Rico | 237,369 | 2021 | |
| 136. | The Gambia | 231,916 | 2021 | |
| 137. | Georgia | 216,670 | 2021 | |
| 138. | Croatia | 215,585 | 2021 | |
| 139. | Gabon | 213,492 | 2021 | |
| 140. | Guinea-Bissau | 205,389 | 2021 | |
| 141. | Albania | 197,780 | 2021 | |
| 142. | Lesotho | 195,964 | 2021 | |
| 143. | Bosnia and Herzegovina | 194,250 | 2021 | |
| 144. | Kuwait | 193,043 | 2021 | |
| 145. | Moldova | 186,360 | 2021 | |
| 146. | Swaziland | 172,702 | 2021 | |
| 147. | Kosovo | 161,823 | 2021 | |
| 148. | Armenia | 158,341 | 2021 | |
| 149. | Lithuania | 148,496 | 2021 | |
| 150. | East Timor | 129,483 | 2021 | |
| 151. | Macedonia | 119,580 | 2021 | |
| 152. | Comoros | 101,086 | 2021 | |
| 153. | Bahrain | 101,018 | 2021 | |
| 154. | Qatar | 98,979 | 2021 | |
| 155. | Mauritius | 95,258 | 2021 | |
| 156. | Latvia | 95,174 | 2021 | |
| 157. | Equatorial Guinea | 91,422 | 2021 | |
| 158. | Djibouti | 90,654 | 2021 | |
| 159. | Slovenia | 89,171 | 2021 | |
| 160. | Guyana | 77,737 | 2021 | |
| 161. | Fiji | 74,755 | 2021 | |
| 162. | Solomon Islands | 71,181 | 2021 | |
| 163. | Trinidad and Tobago | 69,837 | 2021 | |
| 164. | Western Sahara | 68,357 | 2021 | |
| 165. | Bhutan | 67,932 | 2021 | |
| 166. | Cyprus | 66,700 | 2021 | |
| 167. | Estonia | 62,181 | 2021 | |
| 168. | Cape Verde | 53,775 | 2021 | |
| 169. | Suriname | 50,637 | 2021 | |
| 170. | Belize | 39,212 | 2021 | |
| 171. | Brunei | 34,220 | 2021 | |
| 172. | Luxembourg | 33,149 | 2021 | |
| 173. | Macau | 31,471 | 2021 | |
| 174. | Mayotte | 31,385 | 2021 | |
| 175. | Montenegro | 29,665 | 2021 | |
| 176. | Maldives | 28,308 | 2021 | |
| 177. | Sao Tome and Principe | 25,578 | 2021 | |
| 178. | The Bahamas | 24,745 | 2021 | |
| 179. | New Caledonia | 21,677 | 2021 | |
| 180. | Vanuatu | 21,675 | 2021 | |
| 181. | French Polynesia | 21,530 | 2021 | |
| 182. | Samoa | 20,989 | 2021 | |
| 183. | Iceland | 20,796 | 2021 | |
| 184. | Malta | 20,368 | 2021 | |
| 185. | Barbados | 18,031 | 2021 | |
| 186. | Guam | 16,088 | 2021 | |
| 187. | Tonga | 10,918 | 2021 | |
| 188. | Kiribati | 10,829 | 2021 | |
| 189. | Saint Lucia | 10,564 | 2021 | |
| 190. | Federated States of Micronesia | 10,075 | 2021 | |
| 191. | Netherlands Antilles | 10,020 | 2021 | |
| 192. | Grenada | 8,231 | 2021 | |
| 193. | Marshall Islands | 7,981 | 2021 | |
| 194. | Antigua and Barbuda | 7,388 | 2021 | |
| 195. | Saint Vincent and the Grenadines | 7,250 | 2021 | |
| 196. | Aruba | 6,799 | 2021 | |
| 197. | American Samoa | 6,755 | 2021 | |
| 198. | U.S. Virgin Islands | 6,302 | 2021 | |
| 199. | Seychelles | 5,831 | 2021 | |
| 200. | Channel Islands | 5,549 | 2021 |
