The United States Constitution was written in 1787. It was written during the Philadelphia Convention , now known as the Constitutional Convention. This took place from May 25 to Sept. 17, 1787.

SALT LAKE CITY (KUTV) — Sept. 17 marks Constitution Day in the United States, commemorating the signing of the founding document that is the foundation for American government and Americans ...

ASHEVILLE, N.C. (CNN Newsource/WKRC) - An extremely rare and extremely old copy of the United States Constitution will soon be sold at auction, and it could fetch millions. When Congress was ...