States by Order of Entry Into the Union

Updated January 6, 2022 | Infoplease Staff

The first (and last) U.S. states

The original 13 colonies were a group of British territories in North America. Among the Thirteen colonies, Virginia was the first to be settled by English people. Depending on how we define "states" in this instance, the first state to create its own constitution was Connecticut. The first state to be settled by Europeans at all would be Florida; St. Augustine, Florida is the oldest continuous European settlement in the U.S.

However, the states of today are legally distinct from the colonies. The first state in the sense of "one of the current 50 states of America" would be the first one to enter into the Union by adopting the U.S. Constitution.

Replacing the Articles of Confederation

Many people mistakenly believe that the United States Constitution was created after the Revolution. But, the country was first governed under the Articles of Confederation, drafted in 1781 (the same year as Yorktown). The Articles proved insufficient to meet the challenges the country faced. Legislators met to discuss revisions to the Articles, but the representatives decided that it would be better to replace them entirely with a new document. That document became the Constitution, the details of which were hammered out at the Constitutional Convention.

To adopt the Constitution as the new law of the land, it had to be ratified by 2/3 of the states in the Confederation (as per its own Article VII). Ratification required that each state elect representatives to a ratification convention within the state

The American states assumed their present forms in 1788, when the ninth and final necessary state ratified the United States Constitution. The date each state joined the Union is shown in the table below (usually coinciding with a territory being granted statehood). Five states were added during the 20th century. Alaska and Hawaii were the last states to join the Union -- both in 1959.

Joining the Union

Article 4, Section 3 of the U.S. Constitution lays out how a new state can join the Union:

New States may be admitted by the Congress into this Union; but no new States shall be formed or erected within the Jurisdiction of any other State; nor any State be formed by the Junction of two or more States, or parts of States, without the Consent of the Legislatures of the States concerned as well as of the Congress.

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