The World: Population - Age 0-4 (2023) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 57. | Zimbabwe | 2,292,938 | 2023 | |
| 40. | Zambia | 3,325,008 | 2023 | |
| 36. | Yemen | 3,646,631 | 2023 | |
| 157. | Western Sahara | 87,589 | 2023 | |
| 118. | West Bank | 322,408 | 2023 | |
| 221. | Wallis and Futuna | 1,005 | 2023 | |
| 16. | Vietnam | 6,977,973 | 2023 | |
| 49. | Venezuela | 2,782,640 | 2023 | |
| 179. | Vanuatu | 21,897 | 2023 | |
| 54. | Uzbekistan | 2,394,527 | 2023 | |
| 137. | Uruguay | 216,193 | 2023 | |
| 4. | United States of America | 22,714,518 | 2023 | |
| 33. | United Kingdom | 3,880,738 | 2023 | |
| 101. | United Arab Emirates | 521,190 | 2023 | |
| 68. | Ukraine | 1,761,327 | 2023 | |
| 13. | Uganda | 10,316,933 | 2023 | |
| 200. | U.S. Virgin Islands | 5,678 | 2023 | |
| 219. | Tuvalu | 1,253 | 2023 | |
| 205. | Turks and Caicos Islands | 3,953 | 2023 | |
| 105. | Turkmenistan | 485,900 | 2023 | |
| 18. | Turkey | 6,420,646 | 2023 | |
| 90. | Tunisia | 838,210 | 2023 | |
| 164. | Trinidad and Tobago | 64,750 | 2023 | |
| 188. | Tonga | 10,399 | 2023 | |
| 75. | Togo | 1,321,842 | 2023 | |
| 129. | The Gambia | 267,119 | 2023 | |
| 177. | The Bahamas | 24,611 | 2023 | |
| 30. | Thailand | 4,042,836 | 2023 | |
| 20. | Tanzania | 5,954,942 | 2023 | |
| 85. | Tajikistan | 926,850 | 2023 | |
| 83. | Taiwan | 948,918 | 2023 | |
| 53. | Syria | 2,407,109 | 2023 | |
| 114. | Switzerland | 365,889 | 2023 | |
| 104. | Sweden | 499,843 | 2023 | |
| 146. | Swaziland | 164,933 | 2023 | |
| 169. | Suriname | 44,488 | 2023 | |
| 15. | Sudan | 8,396,622 | 2023 | |
| 71. | Sri Lanka | 1,604,934 | 2023 | |
| 58. | Spain | 2,217,262 | 2023 | |
| 62. | South Korea | 2,001,197 | 2023 | |
| 28. | South Africa | 4,191,446 | 2023 | |
| 61. | Somalia | 2,027,233 | 2023 | |
| 161. | Solomon Islands | 78,038 | 2023 | |
| 162. | Slovenia | 74,668 | 2023 | |
| 135. | Slovakia | 248,583 | 2023 | |
| 212. | Sint Maarten | 2,815 | 2023 | |
| 124. | Singapore | 294,814 | 2023 | |
| 78. | Sierra Leone | 1,093,411 | 2023 | |
| 199. | Seychelles | 5,849 | 2023 | |
| 120. | Serbia | 304,663 | 2023 | |
| 55. | Senegal | 2,367,562 | 2023 | |
| 50. | Saudi Arabia | 2,654,534 | 2023 | |
| 175. | Sao Tome and Principe | 28,252 | 2023 | |
| 217. | San Marino | 1,596 | 2023 | |
| 184. | Samoa | 19,287 | 2023 | |
| 198. | Saint Vincent and the Grenadines | 6,174 | 2023 | |
| 228. | Saint Pierre and Miquelon | 185 | 2023 | |
| 213. | Saint Martin | 2,582 | 2023 | |
| 189. | Saint Lucia | 9,952 | 2023 | |
| 208. | Saint Kitts and Nevis | 3,405 | 2023 | |
| 225. | Saint Helena | 364 | 2023 | |
| 226. | Saint Barthélemy | 332 | 2023 | |
| 60. | Rwanda | 2,111,578 | 2023 | |
| 19. | Russia | 6,014,218 | 2023 | |
| 88. | Romania | 887,013 | 2023 | |
| 86. | Republic of Congo | 908,796 | 2023 | |
| 152. | Qatar | 115,439 | 2023 | |
| 139. | Puerto Rico | 206,469 | 2023 | |
| 106. | Portugal | 476,902 | 2023 | |
| 70. | Poland | 1,644,252 | 2023 | |
| 10. | Philippines | 13,060,967 | 2023 | |
| 51. | Peru | 2,653,801 | 2023 | |
| 98. | Paraguay | 585,817 | 2023 | |
| 92. | Papua New Guinea | 788,634 | 2023 | |
| 117. | Panama | 328,650 | 2023 | |
| 220. | Palau | 1,210 | 2023 | |
| 6. | Pakistan | 21,027,850 | 2023 | |
| 110. | Oman | 414,078 | 2023 | |
| 127. | Norway | 272,125 | 2023 | |
| 209. | Northern Mariana Islands | 3,307 | 2023 | |
| 66. | North Korea | 1,810,263 | 2023 | |
| 3. | Nigeria | 34,758,352 | 2023 | |
| 25. | Niger | 4,777,503 | 2023 | |
| 102. | Nicaragua | 517,532 | 2023 | |
| 123. | New Zealand | 298,045 | 2023 | |
| 180. | New Caledonia | 20,903 | 2023 | |
| 190. | Netherlands Antilles | 9,941 | 2023 | |
| 82. | Netherlands | 948,973 | 2023 | |
| 41. | Nepal | 3,263,836 | 2023 | |
| 222. | Nauru | 989 | 2023 | |
| 142. | Namibia | 197,290 | 2023 | |
| 24. | Myanmar | 4,893,944 | 2023 | |
| 22. | Mozambique | 5,006,135 | 2023 | |
| 47. | Morocco | 2,871,785 | 2023 | |
| 227. | Montserrat | 306 | 2023 | |
| 174. | Montenegro | 29,832 | 2023 | |
| 122. | Mongolia | 298,191 | 2023 | |
| 223. | Monaco | 826 | 2023 | |
| 145. | Moldova | 172,867 | 2023 | |
| 12. | Mexico | 10,320,553 | 2023 |
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