UN prediction for most populous countries (& the EU).

2100
1. India 🇮🇳 - 1,505M
2. China 🇨🇳 - 633M
3. Pakistan 🇵🇰 - 511M
4. Nigeria 🇳🇬 - 478M
5. DRC 🇨🇩 - 431M
6. USA 🇺🇸 - 421M
7. Ethiopia 🇪🇹 - 367M
EU-27 🇪🇺 - 348M
8. Indonesia 🇮🇩 - 296M
9. Tanzania 🇹🇿 - 263M
10. Bangladesh 🇧🇩 - 209M

2024
1. India 🇮🇳 - 1,451M
2. China 🇨🇳 - 1,419M
EU-27 🇪🇺 - 451M
3. USA 🇺🇸 - 345M
4. Indonesia 🇮🇩 - 283M
5. Pakistan 🇵🇰 - 251M
6. Nigeria 🇳🇬 - 233M
7. Brazil 🇧🇷 - 212M
8. Bangladesh 🇧🇩 - 174M
9. Russia 🇷🇺 - 145M
10. Ethiopia 🇪🇹 - 132M