The World: Population - Age 0-4 (2021) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 21. | Afghanistan | 5,766,850 | 2021 | |
| 143. | Albania | 197,010 | 2021 | |
| 48. | Algeria | 2,841,161 | 2021 | |
| 194. | American Samoa | 7,720 | 2021 | |
| 211. | Andorra | 3,094 | 2021 | |
| 34. | Angola | 3,745,130 | 2021 | |
| 218. | Anguilla | 1,323 | 2021 | |
| 195. | Antigua and Barbuda | 7,536 | 2021 | |
| 37. | Argentina | 3,523,765 | 2021 | |
| 146. | Armenia | 170,686 | 2021 | |
| 196. | Aruba | 7,150 | 2021 | |
| 74. | Australia | 1,425,877 | 2021 | |
| 115. | Austria | 365,893 | 2021 | |
| 93. | Azerbaijan | 744,141 | 2021 | |
| 156. | Bahrain | 94,967 | 2021 | |
| 8. | Bangladesh | 17,152,912 | 2021 | |
| 185. | Barbados | 16,636 | 2021 | |
| 111. | Belarus | 410,663 | 2021 | |
| 102. | Belgium | 518,824 | 2021 | |
| 170. | Belize | 42,372 | 2021 | |
| 66. | Benin | 1,851,053 | 2021 | |
| 204. | Bermuda | 4,018 | 2021 | |
| 165. | Bhutan | 62,548 | 2021 | |
| 77. | Bolivia | 1,172,393 | 2021 | |
| 144. | Bosnia and Herzegovina | 194,676 | 2021 | |
| 136. | Botswana | 232,705 | 2021 | |
| 9. | Brazil | 17,060,338 | 2021 | |
| 214. | British Virgin Islands | 2,178 | 2021 | |
| 171. | Brunei | 37,266 | 2021 | |
| 131. | Bulgaria | 267,582 | 2021 | |
| 32. | Burkina Faso | 3,855,720 | 2021 | |
| 57. | Burundi | 2,270,140 | 2021 | |
| 69. | Cambodia | 1,736,540 | 2021 | |
| 45. | Cameroon | 3,099,233 | 2021 | |
| 65. | Canada | 1,857,630 | 2021 | |
| 168. | Cape Verde | 54,116 | 2021 | |
| 206. | Cayman Islands | 3,842 | 2021 | |
| 88. | Central African Republic | 886,358 | 2021 | |
| 63. | Chad | 1,922,590 | 2021 | |
| 198. | Channel Islands | 6,272 | 2021 | |
| 76. | Chile | 1,188,562 | 2021 | |
| 2. | China | 77,232,272 | 2021 | |
| 35. | Colombia | 3,745,035 | 2021 | |
| 155. | Comoros | 96,147 | 2021 | |
| 224. | Cook Islands | 536 | 2021 | |
| 113. | Costa Rica | 377,486 | 2021 | |
| 43. | Cote d'Ivoire | 3,135,321 | 2021 | |
| 141. | Croatia | 205,678 | 2021 | |
| 100. | Cuba | 535,430 | 2021 | |
| 164. | Cyprus | 69,144 | 2021 | |
| 112. | Czech Republic | 401,331 | 2021 | |
| 11. | Democratic Republic of the Congo | 12,840,374 | 2021 | |
| 121. | Denmark | 301,709 | 2021 | |
| 154. | Djibouti | 98,528 | 2021 | |
| 201. | Dominica | 5,360 | 2021 | |
| 81. | Dominican Republic | 965,338 | 2021 | |
| 149. | East Timor | 148,955 | 2021 | |
| 73. | Ecuador | 1,426,482 | 2021 | |
| 13. | Egypt | 9,840,040 | 2021 | |
| 107. | El Salvador | 479,319 | 2021 | |
| 151. | Equatorial Guinea | 117,856 | 2021 | |
| 83. | Eritrea | 940,884 | 2021 | |
| 166. | Estonia | 57,528 | 2021 | |
| 5. | Ethiopia | 21,482,680 | 2021 | |
| 207. | Faroe Islands | 3,713 | 2021 | |
| 191. | Federated States of Micronesia | 9,365 | 2021 | |
| 160. | Fiji | 80,764 | 2021 | |
| 128. | Finland | 270,576 | 2021 | |
| 33. | France | 3,849,320 | 2021 | |
| 182. | French Polynesia | 20,738 | 2021 | |
| 123. | Gabon | 292,725 | 2021 | |
| 127. | Gaza Strip | 273,193 | 2021 | |
| 137. | Georgia | 219,546 | 2021 | |
| 38. | Germany | 3,464,699 | 2021 | |
| 44. | Ghana | 3,133,588 | 2021 | |
| 215. | Gibraltar | 2,025 | 2021 | |
| 108. | Greece | 444,325 | 2021 | |
| 203. | Greenland | 4,020 | 2021 | |
| 193. | Grenada | 8,349 | 2021 | |
| 186. | Guam | 16,248 | 2021 | |
| 67. | Guatemala | 1,811,601 | 2021 | |
| 210. | Guernsey | 3,222 | 2021 | |
| 59. | Guinea | 2,113,162 | 2021 | |
| 133. | Guinea-Bissau | 263,516 | 2021 | |
| 167. | Guyana | 56,191 | 2021 | |
| 78. | Haiti | 1,060,760 | 2021 | |
| 80. | Honduras | 986,945 | 2021 | |
| 125. | Hong Kong | 280,215 | 2021 | |
| 109. | Hungary | 436,570 | 2021 | |
| 181. | Iceland | 20,785 | 2021 | |
| 1. | India | 116,153,152 | 2021 | |
| 7. | Indonesia | 20,524,096 | 2021 | |
| 17. | Iran | 6,853,948 | 2021 | |
| 29. | Iraq | 4,188,582 | 2021 | |
| 116. | Ireland | 346,725 | 2021 | |
| 202. | Isle of Man | 4,881 | 2021 | |
| 95. | Israel | 722,639 | 2021 | |
| 51. | Italy | 2,645,783 | 2021 | |
| 134. | Jamaica | 259,945 | 2021 | |
| 25. | Japan | 4,706,576 | 2021 |
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