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Order of Establishment of the Executive Departments

Rank*
Year
Executive Departments
1
1789
2
1789
3
1789
1947
Department of War
Department of Defense (merger of War and Navy departments)
4
1789
1870
Attorney General
Department of Justice

1798
Department of the Navy
(merged with War Department in 1947)

1829
Postmaster General
(Post Office privatized in 1970)
5
1849
6
1862

1903
Department of Commerce and Labor
(Departments split in 1913)
7
1913
8
1913
9
1953
1980
10
1965
11
1966
12
1977
13
1979
14
1989
15
2002

See list of Cabinet Members by Administration .

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