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U.S. Presidents by age at inauguration (1789-2025)
Donald J. Trump became the oldest person to be sworn-in as president in 2025 for his second nonconsecutive term, and Theodore Roosevelt was the youngest at 42 when he first took office in 1901. View the ages of all 47 Presidents of the United States at inauguration.
Note: Grover Cleveland and Donald J. Trump served nonconsecutive terms as president.
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