| Years Served | Secretary | Served |
| 1789-1795 | |
| 1795-1800 | |
| 1801 | |
| 1801-1814 | |
| 1814 | |
| 1814-1816 | |
| 1816-1825 | |
| 1825-1829 | |
| 1829-1831 | |
| 1831-1833 | |
| 1833 | |
| 1833-1834 | |
| 1834-1841 | |
| 1841 | |
| 1841-1843 | |
| 1843-1844 | |
| 1844-1845 | |
| 1845-1849 | |
| 1849-1850 | |
| 1850-1853 | |
| 1853-1857 | |
| 1857-1860 | |
| 1860-1861 | |
| 1861-1861 | |
| 1861-1864 | |
| | Years Served | Secretary | Served |
| 1864-1865 | |
| 1865-1869 | |
| 1869-1873 | |
| 1873-1874 | |
| 1874-1876 | |
| 1876-1877 | |
| 1877-1881 | |
| 1881 | |
| 1881-1884 | |
| 1884 | |
| 1884-1885 | |
| 1885-1887 | |
| 1887-1889 | |
| 1889-1891 | |
| 1891-1893 | |
| 1893-1897 | |
| 1897-1902 | |
| 1902-1907 | |
| 1907-1909 | |
| 1909-1913 | |
| 1913-1918 | |
| 1918-1920 | |
| 1920-1921 | |
| 1921-1932 | |
| 1932-1933 | |
| | Years Served | Secretary | Served |
| 1933 | |
| 1934-1945 | |
| 1945-1946 | |
| 1946-1953 | |
| 1953-1957 | |
| 1957-1961 | |
| 1961-1965 | |
| 1965-1968 | |
| 1968-1969 | |
| 1969-1971 | |
| 1971-1972 | |
| 1972-1974 | |
| 1974-1977 | |
| 1977-1979 | |
| 1979-1981 | |
| 1981-1985 | |
| 1985-1988 | |
| 1988-1993 | |
| 1993-1994 | |
| 1995-1999 | |
| 1999-2001 | |
| 2001-2003 | |
| 2003-2006 | |
| 2006-2009 | |
| 2009-Present | |
|