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How Old Every US President Was During Their Term

Updated October 16, 2019 3.4k views44 items

Here are all 44 US presidents, ordered by their age at start of presidency. While the minimum age requirement for president is 35 years old, the average age of presidents when elected to office is 55 years and 3 months. In 2017, President Donald Trump became the oldest elected president at 70 years old; President Theodore Roosevelt still remains as the youngest elected president at 50 years old. 

Check out this list of US president ages - some might surprise you!

Photo:
  • Barack Obama
    Photo: Metaweb (FB) / Public domain

    Age at Start of Presidency: 47 years, 169 days (January 20, 2009)

    Age at End of Presidency: 55 years, 169 days (January 20, 2017)

    • Birthplace: Honolulu, Hawaii, United States of America
    • Presidency: 44
    • V.P.: Joe Biden
  • Grover Cleveland
    Photo: Metaweb (FB) / Public domain

    Age at Start of Presidency: 47 years, 351 days (March 4, 1885), 55 years, 351 days (March 4, 1893)

    Age at End of Presidency: 51 years, 351 days (March 4, 1893), 59 years, 351 days (March 4, 1897)

    • Birthplace: Caldwell, New Jersey, United States of America
    • Presidency: 22, 24
    • V.P.: Adlai Stevenson I, Thomas A. Hendricks
  • Franklin Pierce
    Photo: Metaweb (FB) / Public domain

    Age at Start of Presidency: 48 years, 101 days (March 4, 1853)

    Age at End of Presidency: 52 years, 101 days (March 4, 1857)

    • Birthplace: Hillsborough, New Hampshire, United States of America
    • Presidency: 14
    • V.P.: William R. King
  • James A. Garfield
    Photo: Cliff / Flickr

    Age at Start of Presidency: 49 years, 105 days (March 4, 1881)

    Age at End of Presidency: 49 years, 304 days (September 19, 1881)

    • Birthplace: Moreland Hills, Ohio, United States of America
    • Presidency: 20
    • V.P.: Chester A. Arthur