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U.S. state

constituent political entity of the United States of America

71 dated entries naming U.S. state, drawn from 40 separate years between 1030 BCE and 1990 CE. Nothing here is written by us: each line is the sentence a Wikipedia year article used, and the link beside it opens the exact revision.

Also written as US state in the source articles; Wikipedia redirects those to the same subject, so their entries are on this page.

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11th century BC

  • 1030 BCEc. 1030 BC — The Belknap Volcano erupts in the State of Oregon.source

18th century

  • 1787December 7 – Delaware ratifies the Constitution, and becomes the first U.S. state.source
  • 1787December 12 – Pennsylvania becomes the second U.S. state.source
  • 1787December 18 – New Jersey becomes the third U.S. state.source
  • 1788January 2 – Georgia ratifies the United States Constitution, and becomes the fourth U.S. state under the new government.source
  • 1788January 9 – Connecticut ratifies the United States Constitution, and becomes the fifth U.S. state.source
  • 1788February 6 – Massachusetts ratifies the United States Constitution, and becomes the sixth U.S. state.source
  • 1788February 6 – Massachusetts ratifies the United States Constitution and becomes the 6th U.S. state (see History of Massachusetts).source
  • 1788April 28 – Maryland ratifies the United States Constitution, and becomes the seventh U.S. state.source
  • 1788May 23 – South Carolina ratifies the United States Constitution, and becomes the eighth U.S. state.source
  • 1788June 21 – New Hampshire ratifies the United States Constitution, and becomes the ninth U.S. state, enabling the Constitution to go into effect. (The latter happens on March 4, 1789, when the first Congress elected under the new Constitution assembles.)source
  • 1788June 25 – The Virginia Ratifying Convention ratifies the United States Constitution, and becomes the tenth U.S. state under the new government.source
  • 1788June 25 – Virginia ratifies the United States Constitution and becomes the 10th U.S. state under the new government (see History of Virginia).source
  • 1788July 26 – New York ratifies the United States Constitution, and becomes the eleventh U.S. state.source
  • 1789November 20 – New Jersey ratifies the United States Bill of Rights, the first state to do so.source
  • 1789November 21 – North Carolina ratifies the United States Constitution, and becomes the 12th U.S. state.source
  • 1790July 26 – Alexander Hamilton's Assumption Bill, giving effect to his First Report on the Public Credit, is passed in the United States Congress, allowing the federal government to assume the consolidated debts of the U.S. states.source
  • 1791March 4 – Vermont is admitted as the 14th U.S. state.source
  • 1791March 4 – Vermont is admitted as the 14th U.S. state (see History of Vermont).source
  • 1792April 5 – United States President George Washington vetoes a bill designed to apportion representatives among U.S. states. This is the first time the presidential veto is used in the United States.source
  • 1796June 1 – Tennessee is admitted as the 16th U.S. state.source

19th century

  • 1803March 1 – Ohio is admitted as the 17th U.S. state, retroactive from August 7, 1953 (see History of Ohio).source
  • 1812April 30 – Louisiana is admitted as the 18th U.S. state.source
  • 1812June 4 – Following Louisiana's admittance as a U.S. state, the territory previously known by that name is renamed the Missouri Territory.source
  • 1816December 11 – Indiana is admitted as the 19th U.S. state.source
  • 1816December 11 – Indiana is admitted as the 19th U.S. state (see History of Indiana).source
  • 1817August 15 – By act of the U.S. Congress (March 3), the Alabama Territory is created by splitting the Mississippi Territory in half, on the day the Mississippi constitution is drafted, four months before Mississippi becomes a U.S. state.source
  • 1817December 10 – Mississippi is admitted as the 20th U.S. state, formerly the Mississippi Territory.source
  • 1817December 10 – Mississippi is admitted as the 20th U.S. state, formerly the Mississippi Territory. (see History of Mississippi). Then Alabama Territory is effective.source
  • 1818December 3 – Illinois is admitted as the 21st U.S. state.source
  • 1818December 3 – Illinois is admitted as the 21st U.S. state (see History of Illinois).source
  • 1819December 14 – Alabama is admitted as the 22nd U.S. state.source
  • 1820March 3 and 6 – The Missouri Compromise becomes law, allowing admission of Missouri and Maine, as slave and free states respectively, as U.S. states.source
  • 1820March 15 – Maine is admitted as the 23rd U.S. state.source
  • 1820March 15 – Maine is admitted as the 23rd U.S. state (see History of Maine).source
  • 1821August 10 – Missouri is admitted as the 24th U.S. state (see History of Missouri).source
  • 1836June 15 – Arkansas is admitted as the 25th U.S. state (see History of Arkansas).source
  • 1845March 3 – Florida is admitted as the 27th U.S. state. On the same day, both houses of the U.S. Congress vote by a two-thirds majority, to override a presidential veto for the first time in history in order to pass legislation.source
  • 1845March 3 – Florida is admitted as the 27th U.S. state (see History of Florida).source
  • 1845October 13 – A majority of voters in the Republic of Texas approve a proposed constitution that, if accepted by the United States Congress, will make Texas a U.S. state.source
  • 1845December 29 – Texas is admitted as the 28th U.S. state.source
  • 1850September 9 – California is admitted as the 31st U.S. state.source
  • 1850September 9 – California is admitted to the Union as the 31st state (see History of California and An Act for the Admission of the State of California).source
  • 1858May 11 – Minnesota is admitted as the 32nd U.S. state.source
  • 1858May 11 – Minnesota is admitted as the 32nd U.S. state (see History of Minnesota).source
  • 1859February 14 – Oregon is admitted as the 33rd U.S. state.source
  • 1859February 14 – Oregon is admitted as the 33rd U.S. state (see History of Oregon).source
  • 1861February 4 – In Montgomery, Alabama, the Provisional Confederate States Congress is formed by representatives from the first seven break-away states.source
  • 1863June 20 – West Virginia is admitted as the 35th U.S. state.source
  • 1864October 31 – Nevada is admitted as the 36th U.S. state.source
  • 1866July 24 – Reconstruction: Tennessee becomes the first U.S. state to be readmitted to the Union following the American Civil War.source
  • 1867March 1 – Nebraska is admitted as the 37th U.S. state.source
  • 1867March 1 – Nebraska is admitted as the 37th U.S. state (see History of Nebraska).source
  • 1871March 22 – In North Carolina, William Woods Holden becomes the first governor of a U.S. state to be removed from office by impeachment.source
  • 1876August 1 – Colorado is admitted as the 38th U.S. state.source
  • 1881September 5 – The Thumb Fire in the U.S. state of Michigan destroys over a million acres (4,000 km²) and kills 282 people.source
  • 1889February 22 – President Grover Cleveland signs the Enabling Act of 1889, admitting North Dakota, South Dakota, Montana and Washington as U.S. states.source
  • 1889November 2 – North Dakota and South Dakota are admitted as the 39th and 40th U.S. states, respectively.source
  • 1889November 8 – Montana is admitted as the 41st U.S. state.source
  • 1889November 11 – Washington is admitted as the 42nd U.S. state.source
  • 1890July 3 – Idaho is admitted as the 43rd U.S. state.source
  • 1890July 10 – Wyoming is admitted as the 44th U.S. state.source
  • 1896January 4 – Utah is admitted as the 45th U.S. state.source

20th century

  • 1906March 4 – Native American tribal governments are terminated in Indian Territory, a prerequisite for creating the U.S. state of Oklahoma in 1907.source
  • 1907November 16 – President Theodore Roosevelt proclaims that Oklahoma has become the 46th U.S. state.source
  • 1912January 6 – New Mexico becomes the 47th U.S. state.source
  • 1936July 13–14 – Peak of July 1936 heat wave: The U.S. states of Wisconsin, Michigan, and Indiana all set new state records for high temperature. At Mio in northern Michigan, it soars to 113 °F.source
  • 1959July 4 – With the admission of Alaska as the 49th U.S. state earlier in the year, the 49-star flag of the United States debuts in Philadelphia.source
  • 1967June 12 – Loving v. Virginia: The United States Supreme Court declares all U.S. state laws prohibiting interracial marriage to be unconstitutional.source
  • 1973February 12 – Ohio becomes the first U.S. state to post road distance signs in metric (see Metric system in the United States).source
  • 1990March 11–13 – The March 1990 Central United States tornado outbreak produces 64 tornadoes across six US states, including four violent F4/F5 tornadoes. The outbreak leaves 2 dead, 89 injured, and causes over $500 million in damages.source

Named in the same entries