World Population Day: 10 most populous countries in the world (and where does the US rank on the list)

World Population Day 2025 highlights a global population exceeding 8.2 billion, with India leading at 1.46 billion, surpassing China. The United States stands third with 347 million, driven by immigration, while other nations like Indonesia, Pakistan, and Nigeria experience growth due to youthful demographics and urbanization. Russia faces population decline due to low birth rates.

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