The World: Population - Age 0-4 (2017) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 57. | Zimbabwe | 2,163,741 | 2017 | |
| 44. | Zambia | 2,997,978 | 2017 | |
| 34. | Yemen | 3,758,588 | 2017 | |
| 161. | Western Sahara | 81,225 | 2017 | |
| 119. | West Bank | 315,792 | 2017 | |
| 222. | Wallis and Futuna | 1,070 | 2017 | |
| 16. | Vietnam | 7,408,275 | 2017 | |
| 49. | Venezuela | 2,748,535 | 2017 | |
| 179. | Vanuatu | 22,171 | 2017 | |
| 54. | Uzbekistan | 2,409,759 | 2017 | |
| 139. | Uruguay | 217,045 | 2017 | |
| 4. | United States of America | 22,032,634 | 2017 | |
| 32. | United Kingdom | 3,883,962 | 2017 | |
| 107. | United Arab Emirates | 479,823 | 2017 | |
| 59. | Ukraine | 2,041,124 | 2017 | |
| 14. | Uganda | 8,562,235 | 2017 | |
| 199. | U.S. Virgin Islands | 6,018 | 2017 | |
| 219. | Tuvalu | 1,209 | 2017 | |
| 204. | Turks and Caicos Islands | 4,056 | 2017 | |
| 105. | Turkmenistan | 484,305 | 2017 | |
| 19. | Turkey | 6,698,255 | 2017 | |
| 87. | Tunisia | 894,332 | 2017 | |
| 162. | Trinidad and Tobago | 79,429 | 2017 | |
| 187. | Tonga | 11,720 | 2017 | |
| 75. | Togo | 1,205,191 | 2017 | |
| 129. | The Gambia | 272,648 | 2017 | |
| 178. | The Bahamas | 24,845 | 2017 | |
| 28. | Thailand | 4,163,570 | 2017 | |
| 20. | Tanzania | 6,243,783 | 2017 | |
| 84. | Tajikistan | 957,841 | 2017 | |
| 79. | Taiwan | 996,211 | 2017 | |
| 53. | Syria | 2,478,918 | 2017 | |
| 114. | Switzerland | 365,655 | 2017 | |
| 106. | Sweden | 480,238 | 2017 | |
| 147. | Swaziland | 168,054 | 2017 | |
| 169. | Suriname | 46,363 | 2017 | |
| 15. | Sudan | 7,869,538 | 2017 | |
| 71. | Sri Lanka | 1,740,241 | 2017 | |
| 55. | Spain | 2,381,251 | 2017 | |
| 60. | South Korea | 2,013,003 | 2017 | |
| 26. | South Africa | 4,346,312 | 2017 | |
| 65. | Somalia | 1,834,928 | 2017 | |
| 163. | Solomon Islands | 77,172 | 2017 | |
| 160. | Slovenia | 83,819 | 2017 | |
| 128. | Slovakia | 274,861 | 2017 | |
| 213. | Sint Maarten | 2,630 | 2017 | |
| 135. | Singapore | 246,367 | 2017 | |
| 82. | Sierra Leone | 981,411 | 2017 | |
| 198. | Seychelles | 6,332 | 2017 | |
| 118. | Serbia | 324,797 | 2017 | |
| 56. | Senegal | 2,236,799 | 2017 | |
| 52. | Saudi Arabia | 2,561,064 | 2017 | |
| 175. | Sao Tome and Principe | 29,828 | 2017 | |
| 217. | San Marino | 1,529 | 2017 | |
| 184. | Samoa | 19,959 | 2017 | |
| 197. | Saint Vincent and the Grenadines | 6,805 | 2017 | |
| 228. | Saint Pierre and Miquelon | 226 | 2017 | |
| 212. | Saint Martin | 2,713 | 2017 | |
| 188. | Saint Lucia | 10,882 | 2017 | |
| 209. | Saint Kitts and Nevis | 3,521 | 2017 | |
| 225. | Saint Helena | 381 | 2017 | |
| 226. | Saint Barthélemy | 348 | 2017 | |
| 61. | Rwanda | 1,993,246 | 2017 | |
| 17. | Russia | 7,075,402 | 2017 | |
| 81. | Romania | 987,138 | 2017 | |
| 89. | Republic of Congo | 836,860 | 2017 | |
| 153. | Qatar | 108,735 | 2017 | |
| 140. | Puerto Rico | 216,716 | 2017 | |
| 103. | Portugal | 508,692 | 2017 | |
| 64. | Poland | 1,844,844 | 2017 | |
| 10. | Philippines | 12,803,679 | 2017 | |
| 50. | Peru | 2,723,593 | 2017 | |
| 98. | Paraguay | 549,597 | 2017 | |
| 93. | Papua New Guinea | 780,498 | 2017 | |
| 117. | Panama | 331,423 | 2017 | |
| 220. | Palau | 1,157 | 2017 | |
| 5. | Pakistan | 21,196,680 | 2017 | |
| 112. | Oman | 391,836 | 2017 | |
| 133. | Norway | 259,480 | 2017 | |
| 205. | Northern Mariana Islands | 4,030 | 2017 | |
| 69. | North Korea | 1,763,216 | 2017 | |
| 3. | Nigeria | 31,329,912 | 2017 | |
| 30. | Niger | 4,001,465 | 2017 | |
| 101. | Nicaragua | 523,214 | 2017 | |
| 122. | New Zealand | 294,989 | 2017 | |
| 183. | New Caledonia | 20,721 | 2017 | |
| 191. | Netherlands Antilles | 9,986 | 2017 | |
| 86. | Netherlands | 917,719 | 2017 | |
| 40. | Nepal | 3,135,200 | 2017 | |
| 221. | Nauru | 1,111 | 2017 | |
| 143. | Namibia | 209,037 | 2017 | |
| 24. | Myanmar | 4,935,389 | 2017 | |
| 25. | Mozambique | 4,445,815 | 2017 | |
| 47. | Morocco | 2,941,155 | 2017 | |
| 227. | Montserrat | 288 | 2017 | |
| 172. | Montenegro | 33,141 | 2017 | |
| 120. | Mongolia | 313,801 | 2017 | |
| 223. | Monaco | 951 | 2017 | |
| 142. | Moldova | 210,415 | 2017 | |
| 12. | Mexico | 10,485,744 | 2017 |
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