The World: Population - Age 20-24 (2025) - Top 100+
| Rank | Country | Population | Year | |
|---|---|---|---|---|
| 213. | British Virgin Islands | 2,531 | 2025 (Est.) | |
| 8. | Brazil | 17,748,128 | 2025 (Est.) | |
| 134. | Botswana | 238,245 | 2025 (Est.) | |
| 143. | Bosnia and Herzegovina | 196,587 | 2025 (Est.) | |
| 77. | Bolivia | 1,150,667 | 2025 (Est.) | |
| 164. | Bhutan | 68,228 | 2025 (Est.) | |
| 204. | Bermuda | 4,267 | 2025 (Est.) | |
| 72. | Benin | 1,315,402 | 2025 (Est.) | |
| 171. | Belize | 38,685 | 2025 (Est.) | |
| 101. | Belgium | 575,143 | 2025 (Est.) | |
| 110. | Belarus | 445,185 | 2025 (Est.) | |
| 185. | Barbados | 18,016 | 2025 (Est.) | |
| 7. | Bangladesh | 17,798,230 | 2025 (Est.) | |
| 152. | Bahrain | 125,207 | 2025 (Est.) | |
| 93. | Azerbaijan | 643,443 | 2025 (Est.) | |
| 113. | Austria | 407,746 | 2025 (Est.) | |
| 65. | Australia | 1,547,288 | 2025 (Est.) | |
| 195. | Aruba | 7,016 | 2025 (Est.) | |
| 149. | Armenia | 154,977 | 2025 (Est.) | |
| 32. | Argentina | 3,510,161 | 2025 (Est.) | |
| 193. | Antigua and Barbuda | 7,571 | 2025 (Est.) | |
| 220. | Anguilla | 1,309 | 2025 (Est.) | |
| 52. | Angola | 2,376,354 | 2025 (Est.) | |
| 202. | Andorra | 4,577 | 2025 (Est.) | |
| 197. | American Samoa | 6,614 | 2025 (Est.) | |
| 41. | Algeria | 2,768,570 | 2025 (Est.) | |
| 141. | Albania | 203,219 | 2025 (Est.) | |
| 31. | Afghanistan | 3,794,626 | 2025 (Est.) |
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