The World: Population - Age 25-29 (2023) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 31. | Afghanistan | 3,565,550 | 2023 | |
| 134. | Albania | 273,064 | 2023 | |
| 35. | Algeria | 3,222,581 | 2023 | |
| 197. | American Samoa | 6,807 | 2023 | |
| 208. | Andorra | 3,774 | 2023 | |
| 54. | Angola | 2,019,322 | 2023 | |
| 220. | Anguilla | 1,219 | 2023 | |
| 193. | Antigua and Barbuda | 8,022 | 2023 | |
| 33. | Argentina | 3,332,148 | 2023 | |
| 141. | Armenia | 214,505 | 2023 | |
| 192. | Aruba | 8,240 | 2023 | |
| 59. | Australia | 1,687,363 | 2023 | |
| 110. | Austria | 491,579 | 2023 | |
| 84. | Azerbaijan | 773,853 | 2023 | |
| 149. | Bahrain | 157,607 | 2023 | |
| 8. | Bangladesh | 15,758,009 | 2023 | |
| 183. | Barbados | 18,343 | 2023 | |
| 109. | Belarus | 491,820 | 2023 | |
| 98. | Belgium | 612,407 | 2023 | |
| 174. | Belize | 35,878 | 2023 | |
| 78. | Benin | 1,045,769 | 2023 | |
| 205. | Bermuda | 4,310 | 2023 | |
| 162. | Bhutan | 70,991 | 2023 | |
| 79. | Bolivia | 1,039,432 | 2023 | |
| 135. | Bosnia and Herzegovina | 265,057 | 2023 | |
| 140. | Botswana | 231,338 | 2023 | |
| 7. | Brazil | 16,849,322 | 2023 | |
| 213. | British Virgin Islands | 3,035 | 2023 | |
| 170. | Brunei | 45,297 | 2023 | |
| 131. | Bulgaria | 295,412 | 2023 | |
| 56. | Burkina Faso | 1,872,663 | 2023 | |
| 75. | Burundi | 1,138,684 | 2023 | |
| 66. | Cambodia | 1,461,647 | 2023 | |
| 53. | Cameroon | 2,062,588 | 2023 | |
| 49. | Canada | 2,295,194 | 2023 | |
| 167. | Cape Verde | 53,987 | 2023 | |
| 206. | Cayman Islands | 4,183 | 2023 | |
| 105. | Central African Republic | 522,072 | 2023 | |
| 72. | Chad | 1,145,984 | 2023 | |
| 191. | Channel Islands | 8,416 | 2023 | |
| 69. | Chile | 1,369,926 | 2023 | |
| 2. | China | 92,723,576 | 2023 | |
| 27. | Colombia | 4,118,774 | 2023 | |
| 163. | Comoros | 69,259 | 2023 | |
| 224. | Cook Islands | 533 | 2023 | |
| 113. | Costa Rica | 412,192 | 2023 | |
| 48. | Cote d'Ivoire | 2,382,593 | 2023 | |
| 133. | Croatia | 278,083 | 2023 | |
| 90. | Cuba | 685,822 | 2023 | |
| 154. | Cyprus | 101,417 | 2023 | |
| 107. | Czech Republic | 500,694 | 2023 | |
| 12. | Democratic Republic of the Congo | 8,444,467 | 2023 | |
| 117. | Denmark | 383,325 | 2023 | |
| 156. | Djibouti | 98,561 | 2023 | |
| 201. | Dominica | 5,342 | 2023 | |
| 81. | Dominican Republic | 941,614 | 2023 | |
| 153. | East Timor | 123,887 | 2023 | |
| 64. | Ecuador | 1,479,790 | 2023 | |
| 14. | Egypt | 7,737,899 | 2023 | |
| 100. | El Salvador | 574,956 | 2023 | |
| 161. | Equatorial Guinea | 72,160 | 2023 | |
| 92. | Eritrea | 658,175 | 2023 | |
| 168. | Estonia | 53,763 | 2023 | |
| 11. | Ethiopia | 9,580,828 | 2023 | |
| 209. | Faroe Islands | 3,695 | 2023 | |
| 194. | Federated States of Micronesia | 8,020 | 2023 | |
| 160. | Fiji | 72,225 | 2023 | |
| 123. | Finland | 314,255 | 2023 | |
| 29. | France | 3,976,340 | 2023 | |
| 181. | French Polynesia | 22,104 | 2023 | |
| 148. | Gabon | 162,253 | 2023 | |
| 145. | Gaza Strip | 184,894 | 2023 | |
| 137. | Georgia | 263,310 | 2023 | |
| 24. | Germany | 4,373,502 | 2023 | |
| 45. | Ghana | 2,570,730 | 2023 | |
| 216. | Gibraltar | 2,147 | 2023 | |
| 103. | Greece | 552,532 | 2023 | |
| 203. | Greenland | 4,480 | 2023 | |
| 195. | Grenada | 7,817 | 2023 | |
| 186. | Guam | 16,319 | 2023 | |
| 60. | Guatemala | 1,609,610 | 2023 | |
| 207. | Guernsey | 4,039 | 2023 | |
| 73. | Guinea | 1,142,042 | 2023 | |
| 147. | Guinea-Bissau | 167,615 | 2023 | |
| 159. | Guyana | 76,959 | 2023 | |
| 77. | Haiti | 1,072,096 | 2023 | |
| 83. | Honduras | 908,641 | 2023 | |
| 116. | Hong Kong | 385,656 | 2023 | |
| 102. | Hungary | 553,833 | 2023 | |
| 179. | Iceland | 22,564 | 2023 | |
| 1. | India | 113,015,488 | 2023 | |
| 4. | Indonesia | 21,651,704 | 2023 | |
| 16. | Iran | 6,737,220 | 2023 | |
| 34. | Iraq | 3,276,725 | 2023 | |
| 124. | Ireland | 313,284 | 2023 | |
| 202. | Isle of Man | 5,254 | 2023 | |
| 94. | Israel | 628,120 | 2023 | |
| 36. | Italy | 3,206,465 | 2023 | |
| 128. | Jamaica | 310,118 | 2023 | |
| 18. | Japan | 6,195,178 | 2023 |
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