The World: Population - Age 20-24 (2016) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 33. | Afghanistan | 3,403,055 | 2016 | |
| 130. | Albania | 293,096 | 2016 | |
| 31. | Algeria | 3,528,591 | 2016 | |
| 197. | American Samoa | 7,386 | 2016 | |
| 206. | Andorra | 3,855 | 2016 | |
| 55. | Angola | 1,897,729 | 2016 | |
| 222. | Anguilla | 1,108 | 2016 | |
| 196. | Antigua and Barbuda | 7,568 | 2016 | |
| 34. | Argentina | 3,339,798 | 2016 | |
| 138. | Armenia | 252,725 | 2016 | |
| 195. | Aruba | 7,647 | 2016 | |
| 63. | Australia | 1,576,666 | 2016 | |
| 109. | Austria | 499,216 | 2016 | |
| 84. | Azerbaijan | 879,507 | 2016 | |
| 153. | Bahrain | 119,705 | 2016 | |
| 8. | Bangladesh | 15,080,080 | 2016 | |
| 182. | Barbados | 19,672 | 2016 | |
| 102. | Belarus | 563,451 | 2016 | |
| 95. | Belgium | 618,574 | 2016 | |
| 173. | Belize | 35,506 | 2016 | |
| 79. | Benin | 993,770 | 2016 | |
| 204. | Bermuda | 4,315 | 2016 | |
| 162. | Bhutan | 73,738 | 2016 | |
| 78. | Bolivia | 1,040,403 | 2016 | |
| 135. | Bosnia and Herzegovina | 269,511 | 2016 | |
| 141. | Botswana | 233,498 | 2016 | |
| 7. | Brazil | 16,568,741 | 2016 | |
| 213. | British Virgin Islands | 2,518 | 2016 | |
| 172. | Brunei | 39,033 | 2016 | |
| 118. | Bulgaria | 344,769 | 2016 | |
| 56. | Burkina Faso | 1,798,962 | 2016 | |
| 75. | Burundi | 1,068,871 | 2016 | |
| 61. | Cambodia | 1,604,576 | 2016 | |
| 53. | Cameroon | 2,062,861 | 2016 | |
| 51. | Canada | 2,309,298 | 2016 | |
| 167. | Cape Verde | 56,914 | 2016 | |
| 210. | Cayman Islands | 3,715 | 2016 | |
| 108. | Central African Republic | 518,772 | 2016 | |
| 72. | Chad | 1,123,425 | 2016 | |
| 194. | Channel Islands | 7,710 | 2016 | |
| 69. | Chile | 1,410,963 | 2016 | |
| 2. | China | 99,594,928 | 2016 | |
| 25. | Colombia | 4,190,197 | 2016 | |
| 164. | Comoros | 68,121 | 2016 | |
| 223. | Cook Islands | 819 | 2016 | |
| 114. | Costa Rica | 419,150 | 2016 | |
| 49. | Cote d'Ivoire | 2,334,403 | 2016 | |
| 134. | Croatia | 273,843 | 2016 | |
| 86. | Cuba | 717,651 | 2016 | |
| 156. | Cyprus | 100,492 | 2016 | |
| 103. | Czech Republic | 558,514 | 2016 | |
| 13. | Democratic Republic of the Congo | 8,131,877 | 2016 | |
| 116. | Denmark | 375,492 | 2016 | |
| 158. | Djibouti | 91,435 | 2016 | |
| 200. | Dominica | 6,335 | 2016 | |
| 80. | Dominican Republic | 946,459 | 2016 | |
| 152. | East Timor | 126,132 | 2016 | |
| 67. | Ecuador | 1,448,603 | 2016 | |
| 15. | Egypt | 7,645,733 | 2016 | |
| 94. | El Salvador | 619,616 | 2016 | |
| 163. | Equatorial Guinea | 68,768 | 2016 | |
| 93. | Eritrea | 625,479 | 2016 | |
| 165. | Estonia | 66,321 | 2016 | |
| 11. | Ethiopia | 9,104,395 | 2016 | |
| 208. | Faroe Islands | 3,796 | 2016 | |
| 190. | Federated States of Micronesia | 9,610 | 2016 | |
| 160. | Fiji | 76,201 | 2016 | |
| 122. | Finland | 328,079 | 2016 | |
| 28. | France | 3,924,552 | 2016 | |
| 179. | French Polynesia | 23,146 | 2016 | |
| 148. | Gabon | 164,054 | 2016 | |
| 146. | Gaza Strip | 184,874 | 2016 | |
| 128. | Georgia | 301,791 | 2016 | |
| 24. | Germany | 4,262,001 | 2016 | |
| 43. | Ghana | 2,621,159 | 2016 | |
| 214. | Gibraltar | 2,427 | 2016 | |
| 106. | Greece | 532,327 | 2016 | |
| 203. | Greenland | 4,823 | 2016 | |
| 192. | Grenada | 8,783 | 2016 | |
| 186. | Guam | 16,233 | 2016 | |
| 60. | Guatemala | 1,608,955 | 2016 | |
| 205. | Guernsey | 4,041 | 2016 | |
| 73. | Guinea | 1,089,997 | 2016 | |
| 147. | Guinea-Bissau | 166,963 | 2016 | |
| 161. | Guyana | 74,761 | 2016 | |
| 76. | Haiti | 1,065,376 | 2016 | |
| 81. | Honduras | 898,619 | 2016 | |
| 115. | Hong Kong | 403,739 | 2016 | |
| 99. | Hungary | 594,502 | 2016 | |
| 178. | Iceland | 23,158 | 2016 | |
| 1. | India | 111,499,016 | 2016 | |
| 4. | Indonesia | 21,436,826 | 2016 | |
| 14. | Iran | 7,720,707 | 2016 | |
| 35. | Iraq | 3,116,675 | 2016 | |
| 132. | Ireland | 285,553 | 2016 | |
| 202. | Isle of Man | 5,235 | 2016 | |
| 97. | Israel | 608,040 | 2016 | |
| 36. | Italy | 3,114,178 | 2016 | |
| 124. | Jamaica | 319,688 | 2016 | |
| 18. | Japan | 6,161,638 | 2016 |
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