The World: Population - Age 0-4 (2021) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 228. | Saint Pierre and Miquelon | 196 | 2021 | |
| 227. | Montserrat | 295 | 2021 | |
| 226. | Saint Barthélemy | 337 | 2021 | |
| 225. | Saint Helena | 365 | 2021 | |
| 224. | Cook Islands | 536 | 2021 | |
| 223. | Monaco | 866 | 2021 | |
| 222. | Nauru | 1,027 | 2021 | |
| 221. | Wallis and Futuna | 1,033 | 2021 | |
| 220. | Palau | 1,199 | 2021 | |
| 219. | Tuvalu | 1,248 | 2021 | |
| 218. | Anguilla | 1,323 | 2021 | |
| 217. | San Marino | 1,561 | 2021 | |
| 216. | Liechtenstein | 2,015 | 2021 | |
| 215. | Gibraltar | 2,025 | 2021 | |
| 214. | British Virgin Islands | 2,178 | 2021 | |
| 213. | Saint Martin | 2,617 | 2021 | |
| 212. | Sint Maarten | 2,783 | 2021 | |
| 211. | Andorra | 3,094 | 2021 | |
| 210. | Guernsey | 3,222 | 2021 | |
| 209. | Saint Kitts and Nevis | 3,460 | 2021 | |
| 208. | Northern Mariana Islands | 3,556 | 2021 | |
| 207. | Faroe Islands | 3,713 | 2021 | |
| 206. | Cayman Islands | 3,842 | 2021 | |
| 205. | Turks and Caicos Islands | 3,993 | 2021 | |
| 204. | Bermuda | 4,018 | 2021 | |
| 203. | Greenland | 4,020 | 2021 | |
| 202. | Isle of Man | 4,881 | 2021 | |
| 201. | Dominica | 5,360 | 2021 | |
| 200. | U.S. Virgin Islands | 5,814 | 2021 | |
| 199. | Seychelles | 6,023 | 2021 | |
| 198. | Channel Islands | 6,272 | 2021 | |
| 197. | Saint Vincent and the Grenadines | 6,365 | 2021 | |
| 196. | Aruba | 7,150 | 2021 | |
| 195. | Antigua and Barbuda | 7,536 | 2021 | |
| 194. | American Samoa | 7,720 | 2021 | |
| 193. | Grenada | 8,349 | 2021 | |
| 192. | Marshall Islands | 8,539 | 2021 | |
| 191. | Federated States of Micronesia | 9,365 | 2021 | |
| 190. | Netherlands Antilles | 10,021 | 2021 | |
| 189. | Saint Lucia | 10,300 | 2021 | |
| 188. | Tonga | 10,797 | 2021 | |
| 187. | Kiribati | 10,849 | 2021 | |
| 186. | Guam | 16,248 | 2021 | |
| 185. | Barbados | 16,636 | 2021 | |
| 184. | Samoa | 19,447 | 2021 | |
| 183. | Malta | 20,585 | 2021 | |
| 182. | French Polynesia | 20,738 | 2021 | |
| 181. | Iceland | 20,785 | 2021 | |
| 180. | New Caledonia | 20,844 | 2021 | |
| 179. | Vanuatu | 22,041 | 2021 | |
| 178. | Mayotte | 23,974 | 2021 | |
| 177. | The Bahamas | 24,774 | 2021 | |
| 176. | Macau | 25,736 | 2021 | |
| 175. | Sao Tome and Principe | 28,785 | 2021 | |
| 174. | Maldives | 30,715 | 2021 | |
| 173. | Montenegro | 30,922 | 2021 | |
| 172. | Luxembourg | 33,454 | 2021 | |
| 171. | Brunei | 37,266 | 2021 | |
| 170. | Belize | 42,372 | 2021 | |
| 169. | Suriname | 45,053 | 2021 | |
| 168. | Cape Verde | 54,116 | 2021 | |
| 167. | Guyana | 56,191 | 2021 | |
| 166. | Estonia | 57,528 | 2021 | |
| 165. | Bhutan | 62,548 | 2021 | |
| 164. | Cyprus | 69,144 | 2021 | |
| 163. | Trinidad and Tobago | 70,061 | 2021 | |
| 162. | Slovenia | 77,679 | 2021 | |
| 161. | Solomon Islands | 77,727 | 2021 | |
| 160. | Fiji | 80,764 | 2021 | |
| 159. | Western Sahara | 85,616 | 2021 | |
| 158. | Mauritius | 86,598 | 2021 | |
| 157. | Latvia | 91,261 | 2021 | |
| 156. | Bahrain | 94,967 | 2021 | |
| 155. | Comoros | 96,147 | 2021 | |
| 154. | Djibouti | 98,528 | 2021 | |
| 153. | Qatar | 114,126 | 2021 | |
| 152. | Macedonia | 116,822 | 2021 | |
| 151. | Equatorial Guinea | 117,856 | 2021 | |
| 150. | Kosovo | 146,914 | 2021 | |
| 149. | East Timor | 148,955 | 2021 | |
| 148. | Lithuania | 153,925 | 2021 | |
| 147. | Swaziland | 165,982 | 2021 | |
| 146. | Armenia | 170,686 | 2021 | |
| 145. | Moldova | 185,749 | 2021 | |
| 144. | Bosnia and Herzegovina | 194,676 | 2021 | |
| 143. | Albania | 197,010 | 2021 | |
| 142. | Namibia | 200,967 | 2021 | |
| 141. | Croatia | 205,678 | 2021 | |
| 140. | Lesotho | 209,850 | 2021 | |
| 139. | Puerto Rico | 210,475 | 2021 | |
| 138. | Uruguay | 216,313 | 2021 | |
| 137. | Georgia | 219,546 | 2021 | |
| 136. | Botswana | 232,705 | 2021 | |
| 135. | Slovakia | 257,749 | 2021 | |
| 134. | Jamaica | 259,945 | 2021 | |
| 133. | Guinea-Bissau | 263,516 | 2021 | |
| 132. | Kuwait | 265,574 | 2021 | |
| 131. | Bulgaria | 267,582 | 2021 | |
| 130. | Norway | 268,305 | 2021 | |
| 129. | The Gambia | 269,518 | 2021 |
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