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By the end of 2022, the world’s population is projected to reach 8 billion.

Further, the UN's projections suggest that the global population could grow to 9.7 billion in 2050 and 10.4 billion in 2100. The growth is caused in part by declining levels of mortality. Globally, life expectancy reached 72.8 years in 2019, an increase of almost 9 years since 1990. Further reduction in mortality is projected to result in average longevity of around 77.2 years globally in 2050.

More than half of the projected increase in the global population between 2022 and 2050 is expected to be concentrated in just eight countries: the Democratic Republic of the Congo, Egypt, Ethiopia, India, Nigeria, Pakistan, Philippines and Tanzania.

In countries with at least half a million population, the largest relative reductions in population size are expected, with losses of 20% or more, and are expected to take place (between 2022 and 2050) in Bulgaria, Latvia, Lithuania, Serbia and Ukraine.

China is expected to experience an absolute decline in its population growth by 2023, and India is expected to surpass China as the world’s most populous country in 2023.
 
 

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