The World: Population - Age 45-49 (2018) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 186. | Mayotte | 10,162 | 2018 | |
| 148. | Mauritius | 84,643 | 2018 | |
| 138. | Mauritania | 154,562 | 2018 | |
| 210. | Marshall Islands | 3,438 | 2018 | |
| 174. | Malta | 25,440 | 2018 | |
| 85. | Mali | 502,515 | 2018 | |
| 177. | Maldives | 21,159 | 2018 | |
| 37. | Malaysia | 1,960,048 | 2018 | |
| 82. | Malawi | 566,547 | 2018 | |
| 59. | Madagascar | 980,307 | 2018 | |
| 142. | Macedonia | 145,172 | 2018 | |
| 160. | Macau | 51,064 | 2018 | |
| 167. | Luxembourg | 37,916 | 2018 | |
| 126. | Lithuania | 255,987 | 2018 | |
| 213. | Liechtenstein | 2,978 | 2018 | |
| 91. | Libya | 474,503 | 2018 | |
| 137. | Liberia | 163,358 | 2018 | |
| 156. | Lesotho | 65,844 | 2018 | |
| 124. | Lebanon | 264,813 | 2018 | |
| 139. | Latvia | 154,436 | 2018 | |
| 111. | Laos | 334,206 | 2018 | |
| 119. | Kyrgyzstan | 291,979 | 2018 | |
| 134. | Kuwait | 175,525 | 2018 | |
| 146. | Kosovo | 109,737 | 2018 | |
| 200. | Kiribati | 5,340 | 2018 | |
| 43. | Kenya | 1,725,430 | 2018 | |
| 55. | Kazakhstan | 1,124,590 | 2018 | |
| 106. | Jordan | 365,773 | 2018 | |
| 8. | Japan | 9,285,163 | 2018 | |
| 144. | Jamaica | 135,007 | 2018 | |
| 18. | Italy | 5,095,324 | 2018 | |
| 89. | Israel | 477,252 | 2018 | |
| 194. | Isle of Man | 6,754 | 2018 | |
| 107. | Ireland | 361,801 | 2018 | |
| 42. | Iraq | 1,747,729 | 2018 | |
| 17. | Iran | 5,095,773 | 2018 | |
| 4. | Indonesia | 17,271,834 | 2018 | |
| 2. | India | 79,237,696 | 2018 | |
| 178. | Iceland | 20,697 | 2018 | |
| 72. | Hungary | 705,534 | 2018 | |
| 80. | Hong Kong | 571,994 | 2018 | |
| 97. | Honduras | 408,999 | 2018 | |
| 88. | Haiti | 480,117 | 2018 | |
| 163. | Guyana | 42,844 | 2018 | |
| 154. | Guinea-Bissau | 73,456 | 2018 | |
| 92. | Guinea | 474,454 | 2018 | |
| 202. | Guernsey | 4,991 | 2018 | |
| 79. | Guatemala | 593,975 | 2018 | |
| 183. | Guam | 12,844 | 2018 | |
| 197. | Grenada | 6,156 | 2018 | |
| 211. | Greenland | 3,403 | 2018 | |
| 63. | Greece | 844,923 | 2018 | |
| 219. | Gibraltar | 1,699 | 2018 | |
| 50. | Ghana | 1,337,755 | 2018 | |
| 13. | Germany | 5,749,735 | 2018 | |
| 122. | Georgia | 283,632 | 2018 | |
| 155. | Gaza Strip | 71,674 | 2018 | |
| 158. | Gabon | 60,141 | 2018 | |
| 179. | French Polynesia | 20,350 | 2018 | |
| 19. | France | 4,630,864 | 2018 | |
| 116. | Finland | 308,616 | 2018 | |
| 159. | Fiji | 51,198 | 2018 | |
| 199. | Federated States of Micronesia | 5,465 | 2018 | |
| 212. | Faroe Islands | 3,013 | 2018 | |
| 25. | Ethiopia | 3,504,450 | 2018 | |
| 150. | Estonia | 83,326 | 2018 | |
| 121. | Eritrea | 289,185 | 2018 | |
| 169. | Equatorial Guinea | 32,648 | 2018 | |
| 112. | El Salvador | 332,088 | 2018 | |
| 21. | Egypt | 4,351,330 | 2018 | |
| 60. | Ecuador | 897,221 | 2018 | |
| 157. | East Timor | 65,471 | 2018 | |
| 76. | Dominican Republic | 622,725 | 2018 | |
| 201. | Dominica | 5,307 | 2018 | |
| 166. | Djibouti | 38,769 | 2018 | |
| 103. | Denmark | 386,762 | 2018 | |
| 28. | Democratic Republic of the Congo | 2,934,305 | 2018 | |
| 68. | Czech Republic | 752,094 | 2018 | |
| 147. | Cyprus | 88,262 | 2018 | |
| 58. | Cuba | 1,005,487 | 2018 | |
| 120. | Croatia | 289,431 | 2018 | |
| 57. | Cote d'Ivoire | 1,032,987 | 2018 | |
| 114. | Costa Rica | 316,937 | 2018 | |
| 223. | Cook Islands | 698 | 2018 | |
| 168. | Comoros | 36,429 | 2018 | |
| 26. | Colombia | 3,088,884 | 2018 | |
| 1. | China | 122,972,688 | 2018 | |
| 56. | Chile | 1,116,551 | 2018 | |
| 196. | Channel Islands | 6,445 | 2018 | |
| 105. | Chad | 379,285 | 2018 | |
| 128. | Central African Republic | 219,639 | 2018 | |
| 203. | Cayman Islands | 4,519 | 2018 | |
| 172. | Cape Verde | 27,397 | 2018 | |
| 32. | Canada | 2,292,357 | 2018 | |
| 64. | Cameroon | 832,123 | 2018 | |
| 62. | Cambodia | 851,750 | 2018 | |
| 98. | Burundi | 406,259 | 2018 | |
| 71. | Burkina Faso | 717,991 | 2018 | |
| 87. | Bulgaria | 480,913 | 2018 | |
| 171. | Brunei | 28,043 | 2018 |
