World Population Prospects

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India's population will surpass China's in less than a decade and Nigeria will beat the United States and become the third most populous country in the world by 2050.

The 2017 Revision of World Population Prospects is the twenty-fifth round of official United Nations population estimates and projections that have been prepared by the Population Division of the Department of Economic and Social Affairs of the United Nations Secretariat.

The main results are presented in a series of Excel files displaying key demographic indicators for each development group, income group, region, subregion and country or area for selected periods or dates within 1950-2100. A publication labeled Key findings and advance tables, which provide insights on the results of this latest revision, is also made available.

https://esa.un.org/unpd/wpp/