How many people worldwide are currently 80 years old or older?

As of 2021, there were approximately 150 million people aged 80 years or older worldwide. This number is projected to increase significantly in the coming decades due to aging populations in many countries. By 2050, estimates suggest that this figure could rise to around 426 million. For the most current statistics, it's advisable to consult resources like the United Nations or the World Health Organization.