- Click here for the Wikipedia.
Focus on when each was established
- State July 27, 1789
- Treasury September 2, 1789
- Defense September 18, 1947
- Justice July 1, 1870
- Interior March 3, 1849
- Agriculture May 15, 1862
- Commerce February 14, 1903
- Labor March 4, 1913
- Health and Human Services April 11,
- Housing and Urban Development September 9, 1965
- Transportation April 1, 1967
- Energy August 4, 1977
- Education October 17, 1979
- Veterans Affairs March 15, 1989
- Homeland Security November 25, 2002
