Timeline: Ratification of the United States Constitution | Timetoast

May 14, 1787

The Philadelphia Convention

Under the Articles of Confederation 55 delegates met in the Pennsylvania State House to discuss difficulties with the Articles of Confederation
May 23, 1787

George Washington was elected President of the Convention
Sep 17, 1787

Constitution completed

The Constitution is complete, ready for the states to decide to ratify it.
Dec 7, 1787

Delaware becomes the First State
Dec 12, 1787

Pennsylvania ratifies the Constitution
Dec 18, 1787

New Jersey ratifies the Constitution
Jan 2, 1788

Georgia ratifies the Constitution
Jan 9, 1788

Connecticut ratifies the Constitution
Feb 6, 1788

Massachusetts ratifies the Constitution
Apr 28, 1788

Maryland ratifies the Constitution
May 23, 1788

South Carolina ratifies the Constitution
Jun 21, 1788

New Hampshire ratifies the Constitution

New Hampshire was the 9th out of the original 13 and with their ratification, the Constitution became the "Law of the Land".
Jun 25, 1788

Virginia ratifies the Constitution
Jul 26, 1788

New York ratifies the Constitution
Nov 21, 1789

North Carolina ratifies the Constitution
May 29, 1790

Rhode Island ratifies the Constitution
Dec 12, 1791

Bills of Rights added to the Constitution

http://www.law.cornell.edu/constitution/billofrights