Official State Nickname of Pennsylvania
Pennsylvania's nickname is The Keystone State because it was the middle colony of the original 13 colonies and because Pennsylvania has held a key position in the economic, social, and political development of the United States.Three of our most treasured documents were written in Pennsylvania: the US Constitution, the Declaration of independence, and the Gettysburg address. All State Nicknames
Pennsylvania's state song mentions the state nickname in the second verse: "Birthplace of a mighty nation, Keystone of the land." A keystone is also featured on the U.S. Mint's commemorative Pennsylvania quarter. The word keystone is from architecture, it describes the central wedge-shaped stone in an arch which holds all the other stones in place.