The World: Population - Age 0-4 (2018) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 90. | Jordan | 837,769 | 2018 | |
| 72. | Kazakhstan | 1,684,124 | 2018 | |
| 21. | Kenya | 5,732,632 | 2018 | |
| 188. | Kiribati | 10,760 | 2018 | |
| 149. | Kosovo | 152,432 | 2018 | |
| 131. | Kuwait | 269,511 | 2018 | |
| 97. | Kyrgyzstan | 656,398 | 2018 | |
| 91. | Laos | 789,747 | 2018 | |
| 155. | Latvia | 100,555 | 2018 | |
| 122. | Lebanon | 292,907 | 2018 | |
| 138. | Lesotho | 218,211 | 2018 | |
| 96. | Liberia | 669,116 | 2018 | |
| 94. | Libya | 755,746 | 2018 | |
| 216. | Liechtenstein | 1,986 | 2018 | |
| 148. | Lithuania | 160,429 | 2018 | |
| 173. | Luxembourg | 32,114 | 2018 | |
| 176. | Macau | 26,774 | 2018 | |
| 151. | Macedonia | 119,426 | 2018 | |
| 27. | Madagascar | 4,229,418 | 2018 | |
| 40. | Malawi | 3,161,448 | 2018 | |
| 46. | Malaysia | 2,946,428 | 2018 | |
| 174. | Maldives | 30,318 | 2018 | |
| 45. | Mali | 3,012,614 | 2018 | |
| 181. | Malta | 20,991 | 2018 | |
| 192. | Marshall Islands | 8,747 | 2018 | |
| 100. | Mauritania | 529,904 | 2018 | |
| 158. | Mauritius | 87,812 | 2018 | |
| 177. | Mayotte | 26,265 | 2018 | |
| 12. | Mexico | 10,461,290 | 2018 | |
| 143. | Moldova | 204,678 | 2018 | |
| 223. | Monaco | 928 | 2018 | |
| 120. | Mongolia | 312,467 | 2018 | |
| 172. | Montenegro | 32,576 | 2018 | |
| 227. | Montserrat | 285 | 2018 | |
| 47. | Morocco | 2,933,240 | 2018 | |
| 25. | Mozambique | 4,538,469 | 2018 | |
| 24. | Myanmar | 4,934,023 | 2018 | |
| 142. | Namibia | 206,817 | 2018 | |
| 221. | Nauru | 1,091 | 2018 | |
| 41. | Nepal | 3,153,103 | 2018 | |
| 86. | Netherlands | 921,844 | 2018 | |
| 190. | Netherlands Antilles | 10,021 | 2018 | |
| 183. | New Caledonia | 20,744 | 2018 | |
| 121. | New Zealand | 295,752 | 2018 | |
| 101. | Nicaragua | 521,270 | 2018 | |
| 30. | Niger | 4,125,153 | 2018 | |
| 3. | Nigeria | 31,866,180 | 2018 | |
| 68. | North Korea | 1,776,364 | 2018 | |
| 206. | Northern Mariana Islands | 3,931 | 2018 | |
| 133. | Norway | 261,458 | 2018 | |
| 112. | Oman | 398,392 | 2018 | |
| 5. | Pakistan | 21,138,800 | 2018 | |
| 220. | Palau | 1,171 | 2018 | |
| 117. | Panama | 331,182 | 2018 | |
| 93. | Papua New Guinea | 781,425 | 2018 | |
| 98. | Paraguay | 553,495 | 2018 | |
| 50. | Peru | 2,713,296 | 2018 | |
| 10. | Philippines | 12,852,232 | 2018 | |
| 66. | Poland | 1,817,657 | 2018 | |
| 103. | Portugal | 501,490 | 2018 | |
| 140. | Puerto Rico | 215,421 | 2018 | |
| 153. | Qatar | 110,536 | 2018 | |
| 89. | Republic of Congo | 851,071 | 2018 | |
| 82. | Romania | 970,543 | 2018 | |
| 18. | Russia | 6,905,174 | 2018 | |
| 59. | Rwanda | 2,010,359 | 2018 | |
| 226. | Saint Barthélemy | 344 | 2018 | |
| 225. | Saint Helena | 375 | 2018 | |
| 208. | Saint Kitts and Nevis | 3,512 | 2018 | |
| 189. | Saint Lucia | 10,746 | 2018 | |
| 212. | Saint Martin | 2,688 | 2018 | |
| 228. | Saint Pierre and Miquelon | 219 | 2018 | |
| 197. | Saint Vincent and the Grenadines | 6,680 | 2018 | |
| 184. | Samoa | 19,801 | 2018 | |
| 217. | San Marino | 1,532 | 2018 | |
| 175. | Sao Tome and Principe | 29,606 | 2018 | |
| 52. | Saudi Arabia | 2,576,674 | 2018 | |
| 56. | Senegal | 2,260,458 | 2018 | |
| 118. | Serbia | 321,712 | 2018 | |
| 198. | Seychelles | 6,259 | 2018 | |
| 79. | Sierra Leone | 998,200 | 2018 | |
| 135. | Singapore | 255,127 | 2018 | |
| 213. | Sint Maarten | 2,673 | 2018 | |
| 130. | Slovakia | 270,981 | 2018 | |
| 161. | Slovenia | 82,362 | 2018 | |
| 163. | Solomon Islands | 77,291 | 2018 | |
| 64. | Somalia | 1,858,016 | 2018 | |
| 26. | South Africa | 4,311,640 | 2018 | |
| 60. | South Korea | 2,004,800 | 2018 | |
| 55. | Spain | 2,345,665 | 2018 | |
| 71. | Sri Lanka | 1,715,299 | 2018 | |
| 15. | Sudan | 7,977,869 | 2018 | |
| 169. | Suriname | 46,023 | 2018 | |
| 147. | Swaziland | 167,515 | 2018 | |
| 107. | Sweden | 485,427 | 2018 | |
| 114. | Switzerland | 366,043 | 2018 | |
| 53. | Syria | 2,466,324 | 2018 | |
| 81. | Taiwan | 988,707 | 2018 | |
| 84. | Tajikistan | 954,436 | 2018 | |
| 20. | Tanzania | 6,199,334 | 2018 |
