What will the global population be in 2100?

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Global Population Projected to Reach 8.8 Billion in 2100

A significant study forecasts that the Earth's population will reach 8.8 billion by the year 2100. This projection is notably lower than the 10.9 billion estimated by the United Nations. The research highlights declining fertility rates as the primary driver for this divergence.
Sub-Saharan Africa Poised for Substantial Growth

In contrast to global trends, the population of Sub-Saharan Africa is expected to triple to approximately three billion people by the end of the century. Nigeria, in particular, is projected to see its population grow to nearly 800 million, making it the second most populous nation after India, which is forecast to have 1.1 billion inhabitants.
Widespread Decline in National Populations

The study anticipates that 183 out of 195 countries will fall below the replacement fertility threshold by 2100, meaning their populations will decline without significant immigration. Over 20 nations, including Japan, Spain, Italy, Thailand, Portugal, and South Korea, are expected to experience a reduction in their population by at least half. China's population alone is projected to decrease from its current 1.4 billion to 730 million within 80 years.
Demographic Shifts and Economic Implications

These demographic shifts will lead to a significant increase in the elderly population, with those over 65 expected to comprise more than a quarter of the global population, reaching 2.37 billion. The number of individuals over 80 is predicted to rise dramatically from about 140 million to 866 million. Concurrently, the working-age population in many countries will shrink considerably, with China's workforce potentially falling from 950 million to just over 350 million. This will reshape global economic power, with India, Nigeria, China, and the United States emerging as dominant forces.

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What will the global population be in 2100?

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