The World: Population - Age 0-4 (2021) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 90. | Jordan | 852,276 | 2021 | |
| 72. | Kazakhstan | 1,591,287 | 2021 | |
| 22. | Kenya | 5,210,233 | 2021 | |
| 187. | Kiribati | 10,849 | 2021 | |
| 150. | Kosovo | 146,914 | 2021 | |
| 132. | Kuwait | 265,574 | 2021 | |
| 97. | Kyrgyzstan | 649,426 | 2021 | |
| 91. | Laos | 791,379 | 2021 | |
| 157. | Latvia | 91,261 | 2021 | |
| 124. | Lebanon | 284,808 | 2021 | |
| 140. | Lesotho | 209,850 | 2021 | |
| 96. | Liberia | 689,377 | 2021 | |
| 94. | Libya | 737,818 | 2021 | |
| 216. | Liechtenstein | 2,015 | 2021 | |
| 148. | Lithuania | 153,925 | 2021 | |
| 172. | Luxembourg | 33,454 | 2021 | |
| 176. | Macau | 25,736 | 2021 | |
| 152. | Macedonia | 116,822 | 2021 | |
| 27. | Madagascar | 4,464,119 | 2021 | |
| 39. | Malawi | 3,322,298 | 2021 | |
| 46. | Malaysia | 2,936,419 | 2021 | |
| 174. | Maldives | 30,715 | 2021 | |
| 42. | Mali | 3,163,838 | 2021 | |
| 183. | Malta | 20,585 | 2021 | |
| 192. | Marshall Islands | 8,539 | 2021 | |
| 99. | Mauritania | 542,636 | 2021 | |
| 158. | Mauritius | 86,598 | 2021 | |
| 178. | Mayotte | 23,974 | 2021 | |
| 12. | Mexico | 10,383,654 | 2021 | |
| 145. | Moldova | 185,749 | 2021 | |
| 223. | Monaco | 866 | 2021 | |
| 120. | Mongolia | 305,339 | 2021 | |
| 173. | Montenegro | 30,922 | 2021 | |
| 227. | Montserrat | 295 | 2021 | |
| 47. | Morocco | 2,899,133 | 2021 | |
| 24. | Mozambique | 4,819,457 | 2021 | |
| 23. | Myanmar | 4,917,998 | 2021 | |
| 142. | Namibia | 200,967 | 2021 | |
| 222. | Nauru | 1,027 | 2021 | |
| 40. | Nepal | 3,223,243 | 2021 | |
| 85. | Netherlands | 938,270 | 2021 | |
| 190. | Netherlands Antilles | 10,021 | 2021 | |
| 180. | New Caledonia | 20,844 | 2021 | |
| 122. | New Zealand | 297,510 | 2021 | |
| 101. | Nicaragua | 519,174 | 2021 | |
| 26. | Niger | 4,512,240 | 2021 | |
| 3. | Nigeria | 33,565,992 | 2021 | |
| 68. | North Korea | 1,806,942 | 2021 | |
| 208. | Northern Mariana Islands | 3,556 | 2021 | |
| 130. | Norway | 268,305 | 2021 | |
| 110. | Oman | 411,075 | 2021 | |
| 6. | Pakistan | 21,053,992 | 2021 | |
| 220. | Palau | 1,199 | 2021 | |
| 117. | Panama | 329,964 | 2021 | |
| 92. | Papua New Guinea | 785,453 | 2021 | |
| 98. | Paraguay | 574,553 | 2021 | |
| 50. | Peru | 2,680,161 | 2021 | |
| 10. | Philippines | 12,982,141 | 2021 | |
| 70. | Poland | 1,718,177 | 2021 | |
| 106. | Portugal | 484,517 | 2021 | |
| 139. | Puerto Rico | 210,475 | 2021 | |
| 153. | Qatar | 114,126 | 2021 | |
| 87. | Republic of Congo | 888,532 | 2021 | |
| 86. | Romania | 919,389 | 2021 | |
| 19. | Russia | 6,361,393 | 2021 | |
| 60. | Rwanda | 2,067,148 | 2021 | |
| 226. | Saint Barthélemy | 337 | 2021 | |
| 225. | Saint Helena | 365 | 2021 | |
| 209. | Saint Kitts and Nevis | 3,460 | 2021 | |
| 189. | Saint Lucia | 10,300 | 2021 | |
| 213. | Saint Martin | 2,617 | 2021 | |
| 228. | Saint Pierre and Miquelon | 196 | 2021 | |
| 197. | Saint Vincent and the Grenadines | 6,365 | 2021 | |
| 184. | Samoa | 19,447 | 2021 | |
| 217. | San Marino | 1,561 | 2021 | |
| 175. | Sao Tome and Principe | 28,785 | 2021 | |
| 52. | Saudi Arabia | 2,627,309 | 2021 | |
| 55. | Senegal | 2,326,002 | 2021 | |
| 119. | Serbia | 311,291 | 2021 | |
| 199. | Seychelles | 6,023 | 2021 | |
| 79. | Sierra Leone | 1,052,682 | 2021 | |
| 126. | Singapore | 280,120 | 2021 | |
| 212. | Sint Maarten | 2,783 | 2021 | |
| 135. | Slovakia | 257,749 | 2021 | |
| 162. | Slovenia | 77,679 | 2021 | |
| 161. | Solomon Islands | 77,727 | 2021 | |
| 62. | Somalia | 1,949,746 | 2021 | |
| 28. | South Africa | 4,241,018 | 2021 | |
| 61. | South Korea | 2,002,161 | 2021 | |
| 58. | Spain | 2,256,434 | 2021 | |
| 71. | Sri Lanka | 1,644,516 | 2021 | |
| 15. | Sudan | 8,259,286 | 2021 | |
| 169. | Suriname | 45,053 | 2021 | |
| 147. | Swaziland | 165,982 | 2021 | |
| 104. | Sweden | 497,771 | 2021 | |
| 114. | Switzerland | 366,666 | 2021 | |
| 53. | Syria | 2,430,330 | 2021 | |
| 82. | Taiwan | 964,233 | 2021 | |
| 84. | Tajikistan | 939,905 | 2021 | |
| 20. | Tanzania | 6,051,257 | 2021 |
