List of presidents of the United States by age: Difference between revisions

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This is a list of United States Presidents by age. This table can be sorted to display United States Presidents by name, order of office, date of birth, age at ascension, length of retirement or lifespan. Age at ascension is determined by the day a president assumed office, not the day of the election.

Two measures of longevity are given; this is to allow for the differing number of leap days occurring within the life of each President. The first figure is the number of days between date of birth and date of death, allowing for leap days; in parenthesis the same period given in years and days, with the years being the number of whole years the President lived, and the days being the remaining number of days after his last birthday.

Notes

The median president by age is Herbert Hoover, who was 54-1/2 years old.
The youngest president elected to office was John F. Kennedy.
The youngest to assume office by any means was Theodore Roosevelt, who was elevated to the Oval Office following William McKinley's assassination.
The oldest president to assume office was Ronald Reagan. He is also the oldest person to have been president.
The longest-lived president was Gerald Ford, who died at the age of 93 years and 165 days. Ronald Reagan was the second longest-lived, only 45 days short of Ford. The next in line to surpass this is George H. W. Bush, who will surpass Reagan if he is still alive on 11 October 2017 and Carter if he is still alive on 25 November 2017.
Barack Obama was elected president on November 4, 2008. On January 20, 2009, the date of his inauguration, he will be the fifth youngest person to ascend to the presidency, at 47 years, 5 months and 16 days old -- placing him between Ulysses S. Grant and Grover Cleveland.

United States of America Presidents' Ages

#	President	Date of birth	Date of ascension	Age at ascension	End of term	Length of retirement	Date of death	Lifespan
1	Washington, GeorgeGeorge Washington	1732-02-22Feb 22, 1732	Apr 30, 1789	57y 02m 08d57y 2m 8d	Mar 4, 1797	01,0161,016d	1799-12-14Dec 14, 1799	24,756d (67y 295d)
2	Adams, John John Adams	1735-10-30Oct 30, 1735	Mar 4, 1797	61y 04m 04d61y 4m 4d	Mar 4, 1801	09,2769,276d	1826-07-04July 4, 1826	33,108d (90y 247d)
3	Jefferson, ThomasThomas Jefferson	1743-04-13Apr 13, 1743	Mar 4, 1801	57y 10m 19d	Mar 4, 1809	06,3326,332d	1826-07-04July 4, 1826	30,386d (83y 82d)
4	Madison, JamesJames Madison	1751-03-16Mar 16, 1751	Mar 4, 1809	57y 11m 16d	Mar 4, 1817	07,0577,057d	1836-06-28June 28, 1836	31,139d (85y 104d)
5	Monroe, JamesJames Monroe	1758-04-28Apr 28, 1758	Mar 4, 1817	58y 10m 04d58y 10m 4d	Mar 4, 1825	02,3142,314d	1831-07-04July 4, 1831	26,729d (73y 67d)
6	Adams, John QuincyJohn Quincy Adams	1767-07-11July 11, 1767	Mar 4, 1825	57y 07m 21d57y 7m 21d	Mar 4, 1829	06,9316,931d	1848-02-23Feb 23, 1848	29,466d (80y 227d)
7	Jackson, AndrewAndrew Jackson	1767-03-15Mar 15, 1767	Mar 4, 1829	61y 11m 17d	Mar 4, 1837	03,0193,019d	1845-06-08June 8, 1845	28,574d (78y 85d)
8	Van Buren, MartinMartin Van Buren	1782-12-05Dec 5, 1782	Mar 4, 1837	54y 02m 27d54y 2m 27d	Mar 4, 1841	07,8137,813d	1862-07-24July 24, 1862	29,085d (79y 231d)
9	Harrison, WilliamWilliam Henry Harrison	1773-02-09Feb 9, 1773	Mar 4, 1841	68y 00m 23d68y 0m 23d	Apr 4, 1841	00,0000d^[1]	1841-4-4Apr 4, 1841	24,890d (68y 54d)
10	Tyler, JohnJohn Tyler	1790-03-29Mar 29, 1790	Apr 4, 1841	51y 00m 06d51y 0m 6d	Mar 4, 1845	06,1656,165d	1862-01-18Jan 18, 1862	26,227d (71y 295d)
11	Polk, JamesJames K. Polk	1795-11-02Nov 2, 1795	Mar 4, 1845	49y 04m 02d49y 4m 2d	Mar 4, 1849	00,104104d	1849-06-15June 15, 1849	19,583d (53y 225d)
12	Taylor, ZacharyZachary Taylor	1784-11-24Nov 24, 1784	Mar 4, 1849	64y 03m 08d64y 3m 8d	July 9, 1850	00,0000d^[1]	1850-07-09July 9, 1850	23,967d (65y 227d)
13	Fillmore, MillardMillard Fillmore	1800-01-07Jan 7, 1800	July 9, 1850	50y 06m 02d50y 6m 2d	Mar 4, 1853	07,6757,675d	1874-03-08Mar 8, 1874	27,088d (74y 60d)
14	Pierce, FranklinFranklin Pierce	1804-11-23Nov 23, 1804	Mar 4, 1853	48y 03m 09d48y 3m 9d	Mar 4, 1857	04,6024,602d	1869-10-08Oct 8, 1869	23,695d (64y 319d)
15	Buchanan, JamesJames Buchanan	1791-04-23Apr 23, 1791	Mar 4, 1857	65y 10m 09d65y 10m 9d	Mar 4, 1861	02,6472,647d	1868-06-01June 1, 1868	28,163d (77y 39d)
16	Lincoln, AbrahamAbraham Lincoln	1809-02-12Feb 12, 1809	Mar 4, 1861	52y 00m 20d52y 0m 20d	Apr 15, 1865	00,0000d^[2]	1865-04-15Apr 15, 1865	20,516d (56y 62d)
17	Johnson, AndrewAndrew Johnson	1808-12-29Dec 29, 1808	Apr 15, 1865	56y 03m 17d56y 3m 17d	Mar 4, 1869	02,3412,341d	1875-07-31July 31, 1875	24,620d (66y 214d)
18	Grant, UlyssesUlysses S. Grant	1822-04-27Apr 27, 1822	Mar 4, 1869	46y 10m 05d46y 10m 5d	Mar 4, 1877	03,0643,064d	1885-07-23July 23, 1885	23,098d (63y 87d)
19	Hayes, RutherfordRutherford B. Hayes	1822-10-04Oct 4, 1822	Mar 4, 1877	54y 05m 00d54y 5m 0d	Mar 4, 1881	04,3384,338d	1893-01-17Jan 17, 1893	25,673d (70y 105d)
20	Garfield, JamesJames A. Garfield	1831-11-19Nov 19, 1831	Mar 4, 1881	49y 03m 13d49y 3m 13d	Sep 19, 1881	00,0000d^[2]	1881-09-19Sep 19, 1881	18,202d (49y 304d)
21	Arthur, ChesterChester A. Arthur	1829-10-05Oct 5, 1829	Sep 19, 1881	51y 11m 14d	Mar 4, 1885	00,625625d	1886-11-18Nov 18, 1886	20,863d (57y 44d)
22	Cleveland, GroverGrover Cleveland	1837-03-18Mar 18, 1837	1885-03-04Mar 4, 1885^[3]	47y 11m 14d	1889-03-04Mar 4, 1889	05,5915,591d^[4]	1908-06-24June 24, 1908	26,030d (71y 98d)
23	Harrison, BenjaminBenjamin Harrison	1833-08-20Aug 20, 1833	Mar 4, 1889	55y 06m 12d55y 6m 12d	Mar 4, 1893	02,9312,931d	1901-03-13Mar 13, 1901	24,676d (67y 205d)
24	Cleveland, GroverGrover Cleveland	1837-03-18Mar 18, 1837	1893-03-04Mar 4, 1893^[3]	55y 11m 14d	1897-03-04Mar 4, 1897	05,5915,591d^[4]	1908-06-24June 24, 1908	26,030d (71y 98d)
25	McKinley, WilliamWilliam McKinley	1843-01-29Jan 29, 1843	Mar 4, 1897	54y 01m 04d54y 1m 4d	Sep 14, 1901	00,0000d^[2]	1901-09-14Sep 14, 1901	21,412d (58y 228d)
26	Roosevelt, TheodoreTheodore Roosevelt	1858-10-27Oct 27, 1858	Sep 14, 1901	42y 10m 18d	Mar 4, 1909	03,5963,596d	1919-01-06Jan 6, 1919	21,985d (60y 71d)
27	Taft, WilliamWilliam Howard Taft	1857-09-15Sep 15, 1857	Mar 4, 1909	51y 05m 17d51y 5m 17d	Mar 4, 1913	06,2146,214d	1930-03-08Mar 8, 1930	26,471d (72y 174d)
28	Wilson, WoodrowWoodrow Wilson	1856-12-28Dec 28, 1856	Mar 4, 1913	56y 02m 4d56y 2m 4d	Mar 4, 1921	01,0671,067d	1924-02-03Feb 3, 1924	24,507d (67y 37d)
29	Harding, WarrenWarren G. Harding	1865-11-02Nov 2, 1865	Mar 4, 1921	55y 04m 02d55y 4m 2d	Aug 2, 1923	00,0000d^[1]	1923-08-02Aug 2, 1923	21,091d (57y 273d)
30	Coolidge, CalvinCalvin Coolidge	1872-07-04July 4, 1872	1923-08-02Aug 2, 1923	51y 00m 29d51y 0m 29d	Mar 4, 1929	01,4041,404d	1933-01-05Jan 5, 1933	22,099d (60y 185d)
31	Hoover, HerbertHerbert Hoover	1874-08-10Aug 10, 1874	Mar 4, 1929	54y 06m 22d54y 6m 22d	Mar 4, 1933	11,55411,554d	1964-10-20Oct 20, 1964	32,943d (90y 71d)
32	Roosevelt, FranklinFranklin D. Roosevelt	1882-01-30Jan 30, 1882	Mar 4, 1933	51y 01m 04d51y 1m 4d	Apr 12, 1945	00,0000d^[1]	1945-04-12April 12, 1945	23,082d (63y 72d)
33	Truman, HarryHarry S. Truman	1884-05-08May 8, 1884	Apr 12, 1945	60y 11m 04d60y 11m 4d	Jan 20, 1953	07,2817,281d	1972-12-26Dec 26, 1972	32,373d (88y 232d)
34	Eisenhower, DwightDwight D. Eisenhower	1890-10-14Oct 14, 1890	Jan 20, 1953	62y 03m 06d62y 3m 6d	Jan 20, 1961	02,9902,990d	1969-03-28Mar 28, 1969	28,654d (78y 165d)
35	Kennedy, JohnJohn F. Kennedy	1917-05-29May 29, 1917	Jan 20, 1961	43y 07m 22d43y 7m 22d	Nov 22, 1963	00,0000d^[2]	1963-11-22Nov 22, 1963	16,978d (46y 177d)
36	Johnson, LyndonLyndon B. Johnson	1908-08-27Aug 27, 1908	Nov 22, 1963	55y 02m 26d55y 2m 26d	Jan 20, 1969	01,4641,464d	1973-01-22Jan 22, 1973	23,524d (64y 148d)
37	Nixon, RichardRichard M. Nixon	1913-01-09Jan 9, 1913	Jan 20, 1969	56y 00m 11d56y 0m 11d	Aug 9, 1974	07,1977,197d	1994-04-22Apr 22, 1994	29,688d (81y 103d)
38	Ford, GeraldGerald R. Ford	1913-07-14July 14, 1913	Aug 9, 1974	61y 00m 26d61y 0m 26d	Jan 20, 1977	10,93210,932d	2006-12-26Dec 26, 2006	34,133d (93y 165d)
39	Carter, JimmyJimmy Carter	1924-10-01Oct 1, 1924	Jan 20, 1977	52y 03m 19d52y 3m 19d	Jan 20, 1981	15,86215,862d	2024-06-25	36,427d (84y 5,746d)
40	Reagan, RonaldRonald Reagan	1911-02-06Feb 6, 1911	Jan 20, 1981	69y 11m 14d	Jan 20, 1989	05,6165,616d	2004-05-05June 5, 2004	34,088d (93y 120d)
41	Bush, George H.W.George H. W. Bush	1924-06-12June 12, 1924	Jan 20, 1989	64y 07m 08d64y 7m 8d	Jan 20, 1993	011,47911,479d	2024-06-25	36,538d (84y 5,857d)
42	Clinton, BillBill Clinton	1946-08-19Aug 19, 1946	Jan 20, 1993	46y 05m 01d46y 5m 1d	Jan 20, 2001	08,5578,557d	2024-06-25	28,435d (62y 5,789d)
43	Bush, George W.George W. Bush	1946-07-06July 6, 1946	Jan 20, 2001	54y 06m 14d54y 6m 14d	Jan 20, 2009	00,000Incumbent		28,479d (62y 5,833d)
#	President	Date of birth	Date of ascension	Age at ascension	End of term	Length of retirement	Date of death	Lifespan

Footnotes

^ ^a ^b ^c ^d Died in office
^ ^a ^b ^c ^d Assassinated
^ ^a ^b Grover Cleveland served two non-consecutive terms, which are listed separately.
^ ^a ^b Cleveland was a former president for 4 years after his first term plus another 11 years after his second term.

Sources

Frank Freidel and Hugh S. Sidey, "The Presidents of the United States". The White House.
Robert S. Summers, "POTUS: Presidents of the United States". Internet Public Library.

[dio-1] Died in office

[ASN-2] Assassinated

[cleveland-3] Grover Cleveland served two non-consecutive terms, which are listed separately.

[cleveland2-4] Cleveland was a former president for 4 years after his first term plus another 11 years after his second term.

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[2]

[3]

[4]

@@ Line 8: / Line 8: @@
 * The youngest president ''elected'' to office was [[John F. Kennedy]].
 * The youngest to assume office by any means was [[Theodore Roosevelt]], who was elevated to the Oval Office following [[William McKinley]]'s assassination.
-* The oldest president to assume office was [[Ronald Reagan]].
+* The oldest president to assume office was [[Ronald Reagan]]. He is also the oldest person to have been president.
 * The longest-lived president was [[Gerald Ford]], who died at the age of 93 years and 165 days. [[Ronald Reagan]] was the second longest-lived, only 45 days short of Ford. The next in line to surpass this is [[George H. W. Bush]], who will surpass Reagan if he is still alive on 11 October 2017 and Carter if he is still alive on 25 November 2017.
 * [[Barack Obama]] was elected president on November 4, 2008. On January 20, 2009, the date of his inauguration, he will be the fifth youngest person to ascend to the presidency, at 47 years, 5 months and 16 days old -- placing him between [[Ulysses S. Grant]] and [[Grover Cleveland]].