The World: Population - Age 45-49 (2021) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 51. | Afghanistan | 1,393,147 | 2021 | |
| 138. | Albania | 168,651 | 2021 | |
| 31. | Algeria | 2,621,418 | 2021 | |
| 204. | American Samoa | 4,006 | 2021 | |
| 188. | Andorra | 8,310 | 2021 | |
| 68. | Angola | 819,961 | 2021 | |
| 220. | Anguilla | 1,349 | 2021 | |
| 195. | Antigua and Barbuda | 6,448 | 2021 | |
| 30. | Argentina | 2,742,617 | 2021 | |
| 133. | Armenia | 197,696 | 2021 | |
| 190. | Aruba | 7,916 | 2021 | |
| 48. | Australia | 1,633,364 | 2021 | |
| 86. | Austria | 548,423 | 2021 | |
| 77. | Azerbaijan | 635,713 | 2021 | |
| 145. | Bahrain | 121,496 | 2021 | |
| 6. | Bangladesh | 11,439,540 | 2021 | |
| 178. | Barbados | 21,250 | 2021 | |
| 75. | Belarus | 672,610 | 2021 | |
| 74. | Belgium | 677,912 | 2021 | |
| 181. | Belize | 16,731 | 2021 | |
| 96. | Benin | 468,890 | 2021 | |
| 205. | Bermuda | 3,959 | 2021 | |
| 163. | Bhutan | 44,453 | 2021 | |
| 80. | Bolivia | 586,213 | 2021 | |
| 111. | Bosnia and Herzegovina | 348,282 | 2021 | |
| 150. | Botswana | 91,772 | 2021 | |
| 5. | Brazil | 14,921,264 | 2021 | |
| 212. | British Virgin Islands | 2,785 | 2021 | |
| 171. | Brunei | 30,529 | 2021 | |
| 93. | Bulgaria | 500,695 | 2021 | |
| 70. | Burkina Faso | 796,983 | 2021 | |
| 97. | Burundi | 461,575 | 2021 | |
| 71. | Cambodia | 766,124 | 2021 | |
| 61. | Cameroon | 913,979 | 2021 | |
| 33. | Canada | 2,259,425 | 2021 | |
| 173. | Cape Verde | 28,988 | 2021 | |
| 203. | Cayman Islands | 4,508 | 2021 | |
| 129. | Central African Republic | 226,991 | 2021 | |
| 104. | Chad | 399,460 | 2021 | |
| 201. | Channel Islands | 4,915 | 2021 | |
| 55. | Chile | 1,133,826 | 2021 | |
| 1. | China | 108,519,544 | 2021 | |
| 28. | Colombia | 3,011,608 | 2021 | |
| 166. | Comoros | 42,888 | 2021 | |
| 223. | Cook Islands | 596 | 2021 | |
| 117. | Costa Rica | 323,029 | 2021 | |
| 56. | Cote d'Ivoire | 1,126,577 | 2021 | |
| 120. | Croatia | 302,623 | 2021 | |
| 62. | Cuba | 906,712 | 2021 | |
| 151. | Cyprus | 89,905 | 2021 | |
| 64. | Czech Republic | 883,882 | 2021 | |
| 26. | Democratic Republic of the Congo | 3,268,503 | 2021 | |
| 108. | Denmark | 384,219 | 2021 | |
| 164. | Djibouti | 44,262 | 2021 | |
| 207. | Dominica | 3,883 | 2021 | |
| 78. | Dominican Republic | 634,387 | 2021 | |
| 157. | East Timor | 63,039 | 2021 | |
| 60. | Ecuador | 965,320 | 2021 | |
| 18. | Egypt | 4,772,724 | 2021 | |
| 109. | El Salvador | 361,348 | 2021 | |
| 170. | Equatorial Guinea | 34,933 | 2021 | |
| 114. | Eritrea | 327,446 | 2021 | |
| 154. | Estonia | 78,742 | 2021 | |
| 23. | Ethiopia | 3,969,196 | 2021 | |
| 211. | Faroe Islands | 3,108 | 2021 | |
| 197. | Federated States of Micronesia | 5,837 | 2021 | |
| 159. | Fiji | 53,837 | 2021 | |
| 119. | Finland | 304,651 | 2021 | |
| 20. | France | 4,414,267 | 2021 | |
| 180. | French Polynesia | 19,878 | 2021 | |
| 158. | Gabon | 58,238 | 2021 | |
| 152. | Gaza Strip | 80,191 | 2021 | |
| 122. | Georgia | 283,886 | 2021 | |
| 19. | Germany | 4,768,796 | 2021 | |
| 50. | Ghana | 1,440,694 | 2021 | |
| 217. | Gibraltar | 1,878 | 2021 | |
| 66. | Greece | 846,770 | 2021 | |
| 213. | Greenland | 2,726 | 2021 | |
| 192. | Grenada | 6,948 | 2021 | |
| 183. | Guam | 12,085 | 2021 | |
| 73. | Guatemala | 699,215 | 2021 | |
| 202. | Guernsey | 4,575 | 2021 | |
| 89. | Guinea | 515,139 | 2021 | |
| 153. | Guinea-Bissau | 79,811 | 2021 | |
| 165. | Guyana | 43,008 | 2021 | |
| 88. | Haiti | 517,357 | 2021 | |
| 99. | Honduras | 444,843 | 2021 | |
| 84. | Hong Kong | 554,852 | 2021 | |
| 69. | Hungary | 806,912 | 2021 | |
| 177. | Iceland | 21,672 | 2021 | |
| 2. | India | 83,596,360 | 2021 | |
| 4. | Indonesia | 18,252,276 | 2021 | |
| 15. | Iran | 5,540,345 | 2021 | |
| 40. | Iraq | 1,884,322 | 2021 | |
| 107. | Ireland | 385,766 | 2021 | |
| 196. | Isle of Man | 6,141 | 2021 | |
| 90. | Israel | 512,203 | 2021 | |
| 17. | Italy | 5,059,269 | 2021 | |
| 144. | Jamaica | 142,871 | 2021 | |
| 8. | Japan | 9,339,529 | 2021 |
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