United States Post Office Department was created in 1792.
United States Post Office Department ended in 1971.
United States Department of the Treasury was created in 1789.
United States Department of the Interior was created in 1849.
United States Department of Education was created in 1979.
United States Department of Energy was created in 1977.
United States Department of State was created in 1789.
United States Department of Commerce was created in 1913.
United States Department of War was created in 1789.
United States Department of Defense was created in 1947.
United States Department of Agriculture was created in 1889.
United States Department of Transportation was created in 1966.
United States Department of Justice was created in 1870.