The World: Population - Age 30-34 (2020) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 43. | Afghanistan | 2,486,682 | 2020 | |
| 136. | Albania | 272,988 | 2020 | |
| 29. | Algeria | 3,568,668 | 2020 | |
| 201. | American Samoa | 5,433 | 2020 | |
| 209. | Andorra | 3,851 | 2020 | |
| 61. | Angola | 1,439,740 | 2020 | |
| 221. | Anguilla | 1,272 | 2020 | |
| 197. | Antigua and Barbuda | 6,925 | 2020 | |
| 32. | Argentina | 3,296,369 | 2020 | |
| 131. | Armenia | 301,535 | 2020 | |
| 192. | Aruba | 8,025 | 2020 | |
| 55. | Australia | 1,696,354 | 2020 | |
| 106. | Austria | 512,515 | 2020 | |
| 76. | Azerbaijan | 944,724 | 2020 | |
| 148. | Bahrain | 164,309 | 2020 | |
| 7. | Bangladesh | 13,670,500 | 2020 | |
| 182. | Barbados | 19,947 | 2020 | |
| 87. | Belarus | 778,096 | 2020 | |
| 92. | Belgium | 648,102 | 2020 | |
| 175. | Belize | 30,391 | 2020 | |
| 85. | Benin | 780,152 | 2020 | |
| 206. | Bermuda | 4,212 | 2020 | |
| 161. | Bhutan | 76,400 | 2020 | |
| 75. | Bolivia | 949,193 | 2020 | |
| 126. | Bosnia and Herzegovina | 333,515 | 2020 | |
| 143. | Botswana | 204,955 | 2020 | |
| 6. | Brazil | 16,971,612 | 2020 | |
| 213. | British Virgin Islands | 3,284 | 2020 | |
| 172. | Brunei | 45,249 | 2020 | |
| 113. | Bulgaria | 450,589 | 2020 | |
| 64. | Burkina Faso | 1,384,149 | 2020 | |
| 80. | Burundi | 862,671 | 2020 | |
| 58. | Cambodia | 1,596,405 | 2020 | |
| 53. | Cameroon | 1,759,234 | 2020 | |
| 44. | Canada | 2,419,648 | 2020 | |
| 168. | Cape Verde | 50,804 | 2020 | |
| 207. | Cayman Islands | 3,975 | 2020 | |
| 114. | Central African Republic | 437,059 | 2020 | |
| 81. | Chad | 856,042 | 2020 | |
| 191. | Channel Islands | 8,540 | 2020 | |
| 63. | Chile | 1,386,120 | 2020 | |
| 1. | China | 121,755,120 | 2020 | |
| 26. | Colombia | 3,902,618 | 2020 | |
| 163. | Comoros | 57,759 | 2020 | |
| 226. | Cook Islands | 441 | 2020 | |
| 115. | Costa Rica | 435,420 | 2020 | |
| 50. | Cote d'Ivoire | 1,992,220 | 2020 | |
| 135. | Croatia | 283,495 | 2020 | |
| 83. | Cuba | 812,386 | 2020 | |
| 156. | Cyprus | 107,104 | 2020 | |
| 89. | Czech Republic | 661,204 | 2020 | |
| 18. | Democratic Republic of the Congo | 6,167,219 | 2020 | |
| 125. | Denmark | 335,327 | 2020 | |
| 160. | Djibouti | 82,463 | 2020 | |
| 200. | Dominica | 5,552 | 2020 | |
| 82. | Dominican Republic | 845,558 | 2020 | |
| 155. | East Timor | 123,999 | 2020 | |
| 66. | Ecuador | 1,329,161 | 2020 | |
| 15. | Egypt | 7,571,779 | 2020 | |
| 109. | El Salvador | 487,263 | 2020 | |
| 164. | Equatorial Guinea | 56,430 | 2020 | |
| 108. | Eritrea | 493,012 | 2020 | |
| 159. | Estonia | 93,203 | 2020 | |
| 14. | Ethiopia | 7,663,967 | 2020 | |
| 210. | Faroe Islands | 3,567 | 2020 | |
| 193. | Federated States of Micronesia | 7,992 | 2020 | |
| 162. | Fiji | 71,437 | 2020 | |
| 128. | Finland | 318,926 | 2020 | |
| 24. | France | 4,157,966 | 2020 | |
| 177. | French Polynesia | 24,726 | 2020 | |
| 153. | Gabon | 126,318 | 2020 | |
| 149. | Gaza Strip | 157,299 | 2020 | |
| 119. | Georgia | 353,175 | 2020 | |
| 19. | Germany | 5,103,606 | 2020 | |
| 46. | Ghana | 2,385,319 | 2020 | |
| 216. | Gibraltar | 2,246 | 2020 | |
| 95. | Greece | 625,985 | 2020 | |
| 205. | Greenland | 4,322 | 2020 | |
| 190. | Grenada | 9,624 | 2020 | |
| 184. | Guam | 14,188 | 2020 | |
| 67. | Guatemala | 1,300,790 | 2020 | |
| 204. | Guernsey | 4,486 | 2020 | |
| 78. | Guinea | 868,694 | 2020 | |
| 151. | Guinea-Bissau | 134,714 | 2020 | |
| 165. | Guyana | 53,399 | 2020 | |
| 77. | Haiti | 869,846 | 2020 | |
| 88. | Honduras | 760,640 | 2020 | |
| 111. | Hong Kong | 453,293 | 2020 | |
| 96. | Hungary | 624,279 | 2020 | |
| 179. | Iceland | 22,305 | 2020 | |
| 2. | India | 102,428,608 | 2020 | |
| 4. | Indonesia | 19,944,380 | 2020 | |
| 11. | Iran | 9,179,001 | 2020 | |
| 37. | Iraq | 2,902,770 | 2020 | |
| 123. | Ireland | 341,277 | 2020 | |
| 202. | Isle of Man | 5,124 | 2020 | |
| 100. | Israel | 580,619 | 2020 | |
| 30. | Italy | 3,545,863 | 2020 | |
| 138. | Jamaica | 257,263 | 2020 | |
| 17. | Japan | 6,530,651 | 2020 |
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