Average Age

Average age tracks the average age of leaders since 1789. The average age is calculated separately for three U.S. bodies: all senators, all representatives, and all governors. The “national” average age is the unweighted average of the ages of these three bodies.

Average Age by Congress and Position
All Congresses (1789–2015)
Congressional… Average Age
Start Year Number Rep. Sen. Gov. Nat’l 1
1789 1st 44.0 46.7 47.9 45.1
1791 2nd 42.6 46.0 50.5 44.5
1793 3rd 43.1 44.8 51.9 44.3
1795 4th 42.0 44.8 52.9 43.6
1797 5th 42.4 45.8 49.6 44.0
1799 6th 42.9 44.8 51.4 44.2
1801 7th 43.5 45.9 49.2 44.6
1803 8th 44.8 46.5 52.4 45.8
1805 9th 44.3 47.9 52.2 45.6
1807 10th 45.0 49.0 53.7 46.6
1809 11th 46.1 47.8 48.5 46.7
1811 12th 45.9 47.6 50.9 46.7
1813 13th 44.9 46.2 48.8 45.4
1815 14th 43.9 44.3 52.7 44.5
1817 15th 43.0 45.0 49.7 43.9
1819 16th 44.2 45.5 49.7 44.9
1821 17th 43.0 47.5 48.2 44.4
1823 18th 42.9 48.4 47.2 44.3
1825 19th 42.9 48.5 45.9 44.3
1827 20th 43.3 48.2 49.1 44.7
1829 21st 44.0 48.0 48.3 45.1
1831 22nd 44.1 48.7 47.9 45.3
1833 23rd 44.0 48.4 47.5 45.0
1835 24th 44.3 47.9 47.2 45.2
1837 25th 43.3 48.5 47.9 44.6
1839 26th 43.1 49.1 46.1 44.4
1841 27th 43.7 49.2 46.3 44.9
1843 28th 42.3 49.0 48.8 44.1
1845 29th 42.8 49.8 48.6 44.6
1847 30th 42.9 49.6 47.7 44.7
1849 31st 43.3 50.4 46.8 45.1
1851 32nd 43.2 50.0 45.9 44.9
1853 33rd 42.7 50.1 44.7 44.4
1855 34th 42.6 50.9 47.0 44.7
1857 35th 43.4 51.0 46.2 45.2
1859 36th 43.4 50.0 48.4 45.2
1861 37th 45.5 49.6 48.5 46.8
1863 38th 45.7 50.4 47.8 46.9
1865 39th 46.8 50.2 49.9 47.9
1867 40th 46.4 49.1 48.9 47.2
1869 41st 45.0 50.1 45.4 46.1
1871 42nd 46.2 51.5 47.5 47.4
1873 43rd 47.1 51.1 49.9 48.1
1875 44th 47.3 52.0 50.4 48.5
1877 45th 48.4 52.7 52.6 49.6
1879 46th 48.8 54.1 53.1 50.2
1881 47th 49.1 53.7 52.3 50.3
1883 48th 48.2 54.4 51.3 49.5
1885 49th 49.0 55.8 52.6 50.6
1887 50th 48.6 57.1 53.3 50.5
1889 51st 49.0 57.7 52.8 50.9
1891 52nd 49.1 57.2 51.6 50.9
1893 53rd 49.2 56.8 52.4 50.9
1895 54th 48.4 56.3 50.7 50.0
1897 55th 48.4 56.2 50.9 50.1
1899 56th 48.1 56.1 52.1 49.9
1901 57th 49.0 57.6 49.5 50.6
1903 58th 48.6 58.8 50.5 50.6
1905 59th 49.1 58.3 49.9 50.8
1907 60th 49.7 57.9 50.6 51.3
1909 61st 50.2 57.6 50.1 51.5
1911 62nd 49.8 56.2 51.4 51.2
1913 63rd 48.8 57.0 51.3 50.4
1915 64th 49.8 57.2 51.9 51.2
1917 65th 50.6 56.0 51.5 51.7
1919 66th 51.1 57.0 50.4 52.0
1921 67th 51.8 57.4 51.1 52.7
1923 68th 51.8 57.6 51.6 52.8
1925 69th 52.6 57.3 52.7 53.5
1927 70th 53.5 57.4 54.9 54.3
1929 71st 54.1 58.4 53.6 54.8
1931 72nd 54.1 57.7 54.4 54.7
1933 73rd 52.8 57.8 55.7 53.9
1935 74th 52.0 57.4 54.1 53.1
1937 75th 51.8 57.4 52.4 52.8
1939 76th 51.8 57.4 52.8 52.8
1941 77th 51.7 57.8 52.9 52.9
1943 78th 52.6 58.0 53.1 53.6
1945 79th 52.9 58.1 53.7 53.9
1947 80th 52.3 56.9 52.8 53.1
1949 81st 52.1 57.3 52.1 53.1
1951 82nd 52.9 56.9 50.8 53.5
1953 83rd 52.5 57.6 50.6 53.4
1955 84th 52.9 57.9 51.2 53.7
1957 85th 53.8 58.4 50.3 54.4
1959 86th 52.6 58.2 49.2 53.3
1961 87th 53.2 57.8 49.8 53.7
1963 88th 52.6 57.1 50.0 53.2
1965 89th 51.4 58.2 50.7 52.5
1967 90th 51.7 58.1 50.9 52.7
1969 91st 52.2 57.0 51.1 53.0
1971 92nd 52.8 56.8 50.7 53.3
1973 93rd 52.1 56.1 50.3 52.7
1975 94th 50.8 56.0 49.9 51.7
1977 95th 50.1 54.5 51.1 51.0
1979 96th 49.8 53.3 50.5 50.5
1981 97th 49.3 53.1 52.0 50.2
1983 98th 49.6 54.1 50.0 50.4
1985 99th 50.9 55.2 51.8 51.7
1987 100th 51.7 55.3 52.8 52.4
1989 101st 52.4 56.2 52.6 53.1
1991 102nd 53.4 57.8 53.8 54.3
1993 103rd 52.3 58.5 55.3 53.6
1995 104th 52.1 58.7 52.8 53.3
1997 105th 52.4 58.5 55.2 53.7
1999 106th 53.5 59.2 54.9 54.6
2001 107th 54.3 59.3 54.8 55.2
2003 108th 54.9 60.4 54.0 55.8
2005 109th 56.1 61.4 55.2 56.9
2007 110th 56.7 62.6 56.0 57.7
2009 111th 57.4 63.4 57.6 58.4
2011 112th 57.2 62.8 58.5 58.2
2013 113th 57.3 61.7 59.5 58.3
2015 114th 57.6 62.2 59.9 58.6

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Statistical Analysis