The World: Population - Age 20-24 (2018) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 228. | Saint Pierre and Miquelon | 213 | 2018 | |
| 227. | Saint Barthélemy | 311 | 2018 | |
| 226. | Montserrat | 344 | 2018 | |
| 225. | Saint Helena | 480 | 2018 | |
| 224. | Cook Islands | 725 | 2018 | |
| 223. | Nauru | 756 | 2018 | |
| 222. | Tuvalu | 1,086 | 2018 | |
| 221. | Anguilla | 1,160 | 2018 | |
| 220. | Wallis and Futuna | 1,204 | 2018 | |
| 219. | Monaco | 1,457 | 2018 | |
| 218. | Saint Martin | 1,713 | 2018 | |
| 217. | Palau | 1,818 | 2018 | |
| 216. | San Marino | 1,928 | 2018 | |
| 215. | Gibraltar | 2,198 | 2018 | |
| 214. | Liechtenstein | 2,269 | 2018 | |
| 213. | British Virgin Islands | 2,515 | 2018 | |
| 212. | Northern Mariana Islands | 2,916 | 2018 | |
| 211. | Sint Maarten | 3,243 | 2018 | |
| 210. | Faroe Islands | 3,704 | 2018 | |
| 209. | Saint Kitts and Nevis | 3,731 | 2018 | |
| 208. | Cayman Islands | 3,737 | 2018 | |
| 207. | Andorra | 3,781 | 2018 | |
| 206. | Turks and Caicos Islands | 3,836 | 2018 | |
| 205. | Guernsey | 3,895 | 2018 | |
| 204. | Bermuda | 4,268 | 2018 | |
| 203. | Greenland | 4,628 | 2018 | |
| 202. | Isle of Man | 5,166 | 2018 | |
| 201. | Dominica | 5,727 | 2018 | |
| 200. | U.S. Virgin Islands | 6,045 | 2018 | |
| 199. | Marshall Islands | 6,336 | 2018 | |
| 198. | Seychelles | 6,362 | 2018 | |
| 197. | American Samoa | 6,968 | 2018 | |
| 196. | Channel Islands | 7,770 | 2018 | |
| 195. | Aruba | 7,851 | 2018 | |
| 194. | Saint Vincent and the Grenadines | 7,912 | 2018 | |
| 193. | Antigua and Barbuda | 7,970 | 2018 | |
| 192. | Grenada | 8,380 | 2018 | |
| 191. | Federated States of Micronesia | 9,381 | 2018 | |
| 190. | Tonga | 9,798 | 2018 | |
| 189. | Kiribati | 11,190 | 2018 | |
| 188. | Netherlands Antilles | 11,307 | 2018 | |
| 187. | Saint Lucia | 12,935 | 2018 | |
| 186. | Guam | 16,365 | 2018 | |
| 185. | Barbados | 18,489 | 2018 | |
| 184. | Sao Tome and Principe | 18,960 | 2018 | |
| 183. | Samoa | 19,094 | 2018 | |
| 182. | Mayotte | 20,169 | 2018 | |
| 181. | French Polynesia | 22,044 | 2018 | |
| 180. | Vanuatu | 22,397 | 2018 | |
| 179. | Iceland | 22,523 | 2018 | |
| 178. | New Caledonia | 23,143 | 2018 | |
| 177. | Malta | 24,915 | 2018 | |
| 176. | The Bahamas | 27,818 | 2018 | |
| 175. | Montenegro | 30,399 | 2018 | |
| 174. | Luxembourg | 35,403 | 2018 | |
| 173. | Belize | 36,390 | 2018 | |
| 172. | Macau | 38,773 | 2018 | |
| 171. | Brunei | 40,204 | 2018 | |
| 170. | Maldives | 43,565 | 2018 | |
| 169. | Suriname | 50,225 | 2018 | |
| 168. | Cape Verde | 56,161 | 2018 | |
| 167. | Western Sahara | 57,152 | 2018 | |
| 166. | Estonia | 58,433 | 2018 | |
| 165. | Solomon Islands | 62,772 | 2018 | |
| 164. | Trinidad and Tobago | 69,010 | 2018 | |
| 163. | Bhutan | 71,407 | 2018 | |
| 162. | Comoros | 72,033 | 2018 | |
| 161. | Equatorial Guinea | 72,884 | 2018 | |
| 160. | Fiji | 75,440 | 2018 | |
| 159. | Guyana | 78,147 | 2018 | |
| 158. | Djibouti | 93,926 | 2018 | |
| 157. | Slovenia | 95,081 | 2018 | |
| 156. | Cyprus | 95,172 | 2018 | |
| 155. | Latvia | 96,674 | 2018 | |
| 154. | Mauritius | 100,388 | 2018 | |
| 153. | Bahrain | 124,065 | 2018 | |
| 152. | East Timor | 124,547 | 2018 | |
| 151. | Macedonia | 146,663 | 2018 | |
| 150. | Kosovo | 156,545 | 2018 | |
| 149. | Swaziland | 158,920 | 2018 | |
| 148. | Gabon | 171,526 | 2018 | |
| 147. | Guinea-Bissau | 173,512 | 2018 | |
| 146. | Lesotho | 183,337 | 2018 | |
| 145. | Gaza Strip | 185,576 | 2018 | |
| 144. | Qatar | 192,816 | 2018 | |
| 143. | Lithuania | 194,058 | 2018 | |
| 142. | The Gambia | 205,458 | 2018 | |
| 141. | Armenia | 215,557 | 2018 | |
| 140. | Moldova | 220,264 | 2018 | |
| 139. | Botswana | 235,299 | 2018 | |
| 138. | Namibia | 255,897 | 2018 | |
| 137. | Kuwait | 259,073 | 2018 | |
| 136. | Bosnia and Herzegovina | 265,677 | 2018 | |
| 135. | Puerto Rico | 269,348 | 2018 | |
| 134. | Uruguay | 269,616 | 2018 | |
| 133. | Georgia | 270,410 | 2018 | |
| 132. | Croatia | 277,316 | 2018 | |
| 131. | Albania | 281,351 | 2018 | |
| 130. | Mongolia | 288,229 | 2018 | |
| 129. | Ireland | 293,610 | 2018 |
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