Why Is Delaware Called the First State and When Did Delaware Ratify the United States Constitution?

Delaware was the first state to ratify the U.S. Constitution, which it did on December 7, 1787.

That’s why Delaware is represented first in presidential inaugurations and other national events.

Delaware, Maryland, and Virginia share the Delmarva Peninsula.

If you look at a map, you’ll notice that Delaware’s northern boundary with Pennsylvania is formed by the arc of a perfect circle.

It’s the only state with a circular boundary.