The map shows the location of the 307 rural areas analyzed in the study. The reported populations in the graphic were found to be underestimated by between 53 and 84%. Credit: Josias Láng-Ritter et.

Note: A new version of this post from 2024 provides updated and expanded projections on the global centenarian population. The world was home to nearly half a million centenarians (people ages 100 and ...