The world population is predicted to peak at about 10.3 billion people in the 2080s, with a subsequent decrease to about 10.2 billion by the end of the century. Immigration can play a role in slowing this decline.
By the 2070s, senior citizens are expected to outnumber children under age 18. People aged 80 and over may overtake the number of infants by the mid-2030s.
Global fertility rate has decreased from 3.3 births per woman in 1990 to 2.3 births per woman currently. Maintaining a stable population size typically requires 2.1 births per woman.
Global life expectancy, which had declined during the COVID pandemic, is now at 73.3 years and is forecasted to increase to 77.4 years by 2054.
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