One-Third of the World’s Population Lives Where Older Adults Already Outnumber Children
More than 2.8 billion people live in countries and territories where adults age 65 and older outnumber children under age 15, according to PRB’s 2026 World Population Data Sheet and Data Explorer. Low fertility, a major driver of population aging, extends much further. Over 70 percent of the world’s population lives in 121 countries and territories where fertility is at or below replacement level. Still, the global population is projected to rise from 8.2 billion in 2026 to 9.6 billion...
