The World: Population - Age 15-19 (2018) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 228. | Saint Barthélemy | 209 | 2018 | |
| 227. | Saint Pierre and Miquelon | 279 | 2018 | |
| 226. | Saint Helena | 477 | 2018 | |
| 225. | Cook Islands | 720 | 2018 | |
| 224. | Montserrat | 793 | 2018 | |
| 223. | Nauru | 831 | 2018 | |
| 222. | Tuvalu | 991 | 2018 | |
| 221. | Anguilla | 1,290 | 2018 | |
| 220. | Wallis and Futuna | 1,297 | 2018 | |
| 219. | Monaco | 1,428 | 2018 | |
| 218. | Saint Martin | 1,610 | 2018 | |
| 217. | Palau | 1,710 | 2018 | |
| 216. | Gibraltar | 1,856 | 2018 | |
| 215. | San Marino | 1,987 | 2018 | |
| 214. | British Virgin Islands | 2,133 | 2018 | |
| 213. | Liechtenstein | 2,177 | 2018 | |
| 212. | Northern Mariana Islands | 2,798 | 2018 | |
| 211. | Sint Maarten | 2,815 | 2018 | |
| 210. | Guernsey | 3,369 | 2018 | |
| 209. | Turks and Caicos Islands | 3,519 | 2018 | |
| 208. | Faroe Islands | 3,525 | 2018 | |
| 207. | Cayman Islands | 3,534 | 2018 | |
| 206. | Saint Kitts and Nevis | 3,850 | 2018 | |
| 205. | Greenland | 4,081 | 2018 | |
| 204. | Bermuda | 4,235 | 2018 | |
| 203. | Andorra | 4,598 | 2018 | |
| 202. | Dominica | 4,913 | 2018 | |
| 201. | Isle of Man | 4,938 | 2018 | |
| 200. | Channel Islands | 5,806 | 2018 | |
| 199. | Seychelles | 5,905 | 2018 | |
| 198. | U.S. Virgin Islands | 6,284 | 2018 | |
| 197. | Aruba | 6,757 | 2018 | |
| 196. | American Samoa | 6,790 | 2018 | |
| 195. | Marshall Islands | 7,656 | 2018 | |
| 194. | Antigua and Barbuda | 7,951 | 2018 | |
| 193. | Saint Vincent and the Grenadines | 7,956 | 2018 | |
| 192. | Grenada | 8,017 | 2018 | |
| 191. | Netherlands Antilles | 9,808 | 2018 | |
| 190. | Federated States of Micronesia | 10,707 | 2018 | |
| 189. | Tonga | 11,150 | 2018 | |
| 188. | Kiribati | 11,489 | 2018 | |
| 187. | Saint Lucia | 11,544 | 2018 | |
| 186. | Guam | 17,147 | 2018 | |
| 185. | Barbados | 18,226 | 2018 | |
| 184. | Samoa | 20,676 | 2018 | |
| 183. | Malta | 21,328 | 2018 | |
| 182. | Iceland | 21,412 | 2018 | |
| 181. | Vanuatu | 21,939 | 2018 | |
| 180. | New Caledonia | 22,561 | 2018 | |
| 179. | French Polynesia | 22,593 | 2018 | |
| 178. | Sao Tome and Principe | 23,995 | 2018 | |
| 177. | The Bahamas | 25,447 | 2018 | |
| 176. | Mayotte | 28,802 | 2018 | |
| 175. | Macau | 29,247 | 2018 | |
| 174. | Montenegro | 29,530 | 2018 | |
| 173. | Maldives | 31,610 | 2018 | |
| 172. | Luxembourg | 33,037 | 2018 | |
| 171. | Brunei | 35,488 | 2018 | |
| 170. | Belize | 38,409 | 2018 | |
| 169. | Suriname | 53,564 | 2018 | |
| 168. | Cape Verde | 55,448 | 2018 | |
| 167. | Estonia | 60,485 | 2018 | |
| 166. | Western Sahara | 63,589 | 2018 | |
| 165. | Cyprus | 68,700 | 2018 | |
| 164. | Solomon Islands | 68,947 | 2018 | |
| 163. | Bhutan | 69,588 | 2018 | |
| 162. | Trinidad and Tobago | 71,325 | 2018 | |
| 161. | Fiji | 71,944 | 2018 | |
| 160. | Guyana | 83,251 | 2018 | |
| 159. | Equatorial Guinea | 84,999 | 2018 | |
| 158. | Slovenia | 88,918 | 2018 | |
| 157. | Comoros | 91,281 | 2018 | |
| 156. | Djibouti | 91,833 | 2018 | |
| 155. | Latvia | 91,979 | 2018 | |
| 154. | Qatar | 93,723 | 2018 | |
| 153. | Mauritius | 97,729 | 2018 | |
| 152. | Bahrain | 99,333 | 2018 | |
| 151. | East Timor | 127,757 | 2018 | |
| 150. | Macedonia | 130,112 | 2018 | |
| 149. | Armenia | 158,869 | 2018 | |
| 148. | Lithuania | 160,501 | 2018 | |
| 147. | Swaziland | 168,235 | 2018 | |
| 146. | Kosovo | 170,102 | 2018 | |
| 145. | Kuwait | 179,511 | 2018 | |
| 144. | Moldova | 186,787 | 2018 | |
| 143. | Guinea-Bissau | 194,932 | 2018 | |
| 142. | Lesotho | 196,231 | 2018 | |
| 141. | Gabon | 199,760 | 2018 | |
| 140. | Bosnia and Herzegovina | 215,134 | 2018 | |
| 139. | Gaza Strip | 219,459 | 2018 | |
| 138. | The Gambia | 219,566 | 2018 | |
| 137. | Croatia | 223,224 | 2018 | |
| 136. | Georgia | 223,993 | 2018 | |
| 135. | Albania | 233,574 | 2018 | |
| 134. | Botswana | 237,848 | 2018 | |
| 133. | Uruguay | 254,481 | 2018 | |
| 132. | Namibia | 255,123 | 2018 | |
| 131. | Puerto Rico | 258,654 | 2018 | |
| 130. | Mongolia | 271,381 | 2018 | |
| 129. | Slovakia | 279,184 | 2018 |
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