Fthr at 90

 A good current estimate is:

🌍 About 25–35 million people in the world are aged 90 or older.

How this estimate is derived

• The world population is about 8.1 billion.
• People aged 90+ typically make up about 0.3–0.4% of the global population in current demographic models.

That gives roughly:

• 0.3% of 8.1B ≈ 24 million
• 0.4% of 8.1B ≈ 32 million

➡️ So demographers usually estimate ~30 million people aged 90+ worldwide.

Context

• Only a tiny fraction reach 100 — around 600,000–700,000 centenarians globally.
• Longevity is rising rapidly due to medicine and living standards.
• For comparison: the UK alone has about 625,000 people aged 90+ as of 2024.  

✅ Summary

• Age 90+ worldwide: ~30 million
• Age 100+: ~0.6–0.7 million

If you’re curious, I can also show something fascinating: what percentage of everyone who has ever reached 90 is alive right now. It’s surprisingly high.