The World: Population - Age 40-44 (2021) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 183. | Mayotte | 12,325 | 2021 | |
| 151. | Mauritius | 111,534 | 2021 | |
| 138. | Mauritania | 212,400 | 2021 | |
| 202. | Marshall Islands | 4,802 | 2021 | |
| 174. | Malta | 29,894 | 2021 | |
| 74. | Mali | 785,079 | 2021 | |
| 175. | Maldives | 26,881 | 2021 | |
| 40. | Malaysia | 2,242,474 | 2021 | |
| 67. | Malawi | 884,522 | 2021 | |
| 56. | Madagascar | 1,319,328 | 2021 | |
| 142. | Macedonia | 158,901 | 2021 | |
| 164. | Macau | 50,161 | 2021 | |
| 171. | Luxembourg | 36,843 | 2021 | |
| 132. | Lithuania | 242,910 | 2021 | |
| 214. | Liechtenstein | 2,523 | 2021 | |
| 90. | Libya | 563,446 | 2021 | |
| 134. | Liberia | 233,650 | 2021 | |
| 149. | Lesotho | 124,405 | 2021 | |
| 122. | Lebanon | 306,563 | 2021 | |
| 145. | Latvia | 144,884 | 2021 | |
| 107. | Laos | 425,410 | 2021 | |
| 112. | Kyrgyzstan | 395,374 | 2021 | |
| 131. | Kuwait | 252,627 | 2021 | |
| 148. | Kosovo | 128,609 | 2021 | |
| 196. | Kiribati | 6,412 | 2021 | |
| 32. | Kenya | 2,926,475 | 2021 | |
| 57. | Kazakhstan | 1,249,459 | 2021 | |
| 109. | Jordan | 418,951 | 2021 | |
| 11. | Japan | 8,013,978 | 2021 | |
| 141. | Jamaica | 176,182 | 2021 | |
| 20. | Italy | 4,387,119 | 2021 | |
| 93. | Israel | 539,199 | 2021 | |
| 199. | Isle of Man | 5,405 | 2021 | |
| 108. | Ireland | 425,319 | 2021 | |
| 39. | Iraq | 2,285,901 | 2021 | |
| 14. | Iran | 7,199,587 | 2021 | |
| 4. | Indonesia | 19,596,930 | 2021 | |
| 1. | India | 90,792,776 | 2021 | |
| 177. | Iceland | 22,049 | 2021 | |
| 76. | Hungary | 780,331 | 2021 | |
| 95. | Hong Kong | 527,754 | 2021 | |
| 91. | Honduras | 545,366 | 2021 | |
| 86. | Haiti | 615,225 | 2021 | |
| 165. | Guyana | 45,767 | 2021 | |
| 154. | Guinea-Bissau | 95,207 | 2021 | |
| 84. | Guinea | 620,586 | 2021 | |
| 206. | Guernsey | 4,246 | 2021 | |
| 68. | Guatemala | 859,330 | 2021 | |
| 185. | Guam | 11,712 | 2021 | |
| 195. | Grenada | 6,416 | 2021 | |
| 211. | Greenland | 2,952 | 2021 | |
| 71. | Greece | 831,178 | 2021 | |
| 217. | Gibraltar | 2,033 | 2021 | |
| 51. | Ghana | 1,609,127 | 2021 | |
| 19. | Germany | 4,785,137 | 2021 | |
| 123. | Georgia | 288,165 | 2021 | |
| 152. | Gaza Strip | 104,864 | 2021 | |
| 158. | Gabon | 70,517 | 2021 | |
| 180. | French Polynesia | 20,185 | 2021 | |
| 23. | France | 4,157,591 | 2021 | |
| 118. | Finland | 324,312 | 2021 | |
| 160. | Fiji | 67,282 | 2021 | |
| 193. | Federated States of Micronesia | 6,935 | 2021 | |
| 212. | Faroe Islands | 2,695 | 2021 | |
| 18. | Ethiopia | 5,257,766 | 2021 | |
| 156. | Estonia | 80,662 | 2021 | |
| 113. | Eritrea | 391,503 | 2021 | |
| 168. | Equatorial Guinea | 41,275 | 2021 | |
| 110. | El Salvador | 406,058 | 2021 | |
| 15. | Egypt | 6,608,887 | 2021 | |
| 61. | Ecuador | 1,115,165 | 2021 | |
| 159. | East Timor | 67,658 | 2021 | |
| 81. | Dominican Republic | 695,149 | 2021 | |
| 201. | Dominica | 4,924 | 2021 | |
| 161. | Djibouti | 56,851 | 2021 | |
| 116. | Denmark | 334,521 | 2021 | |
| 24. | Democratic Republic of the Congo | 4,131,871 | 2021 | |
| 70. | Czech Republic | 842,631 | 2021 | |
| 153. | Cyprus | 101,247 | 2021 | |
| 85. | Cuba | 618,558 | 2021 | |
| 119. | Croatia | 318,953 | 2021 | |
| 55. | Cote d'Ivoire | 1,378,626 | 2021 | |
| 115. | Costa Rica | 358,954 | 2021 | |
| 227. | Cook Islands | 408 | 2021 | |
| 166. | Comoros | 45,111 | 2021 | |
| 31. | Colombia | 3,099,583 | 2021 | |
| 2. | China | 90,635,936 | 2021 | |
| 58. | Chile | 1,231,119 | 2021 | |
| 203. | Channel Islands | 4,556 | 2021 | |
| 98. | Chad | 510,338 | 2021 | |
| 126. | Central African Republic | 281,684 | 2021 | |
| 205. | Cayman Islands | 4,301 | 2021 | |
| 172. | Cape Verde | 34,882 | 2021 | |
| 37. | Canada | 2,331,106 | 2021 | |
| 59. | Cameroon | 1,194,428 | 2021 | |
| 65. | Cambodia | 937,351 | 2021 | |
| 88. | Burundi | 587,318 | 2021 | |
| 64. | Burkina Faso | 995,805 | 2021 | |
| 97. | Bulgaria | 512,397 | 2021 | |
| 170. | Brunei | 37,378 | 2021 |
