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Population of G20 countries in 2025 and projections for 2030 (in millions)

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Source

Release date

October 2025

Region

Worldwide

Survey time period

October 2025

Supplementary notes

*Preliminary figures.

The G20 is an international organization whose permanent members are 19 countries and the European Union. Data for the European Union has been excluded due to overlap with G20 members France, Germany, Italy and the United Kingdom.

Citation formats

Breakdown of population sizes in G20 countries 2025 and 2030

Published by S. Galan, Jan 22, 2026

Among the 19 G20 countries, India had the largest population in October 2025, overtaking China as the most populous country in the world in 2023. Both countries had an estimated population of *** billion people. The number of inhabitants in India is expected to be over *** billion people in 2030, higher than in China at *** billion.

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G20The European UnionSino-U.S. trading relationshipGlobal economyNorth American Free Trade Agreement
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