1805

Events from the year **1805 in the United States**.

* Vice President: Aaron Burr (DR-NY) (until March 4), George Clinton (DR-NY) (starting March 4)
* Chief Justice: John Marshall (VA)
* Speaker of the House of Representatives: Nathaniel Macon (DR-NC)
* Congress: 8th (until March 4), 9th (starting March 4)

Governors
* Governor of Connecticut: Jonathan Trumbull, Jr. (Federalist)
* Governor of Delaware: David Hall ([Democratic-Republican) (until January 15), Nathaniel Mitchell (Federalist) (starting January 15)
* Governor of Georgia: John Milledge (Democratic-Republican)
* Governor of Kentucky: Christopher Greenup (Democratic-Republican)
* Governor of Maryland: Robert Bowie (Democratic-Republican)
* Governor of Massachusetts: Caleb Strong (Federalist)
* Governor of New Hampshire: John Taylor Gilman (Democratic-Republican) (until June 6), John Langdon (Democratic-Republican) (starting June 6)
* Governor of New Jersey: Joseph Bloomfield (Democratic-Republican)
* Governor of New York: Morgan Lewis (Democratic-Republican)
* Governor of North Carolina: James Turner (Democratic-Republican) (until December 10), Nathaniel Alexander (Democratic-Republican) (starting December 10)
* Governor of Ohio: Edward Tiffin (Democratic-Republican)
* Governor of Pennsylvania: Thomas McKean (Democratic-Republican)
* Governor of Rhode Island: Arthur Fenner (Country) (until October 15), Henry Smith (Country) (starting October 15)
* Governor of South Carolina: Paul Hamilton (Democratic-Republican)
* Governor of Tennessee: John Sevier (Democratic-Republican)
* Governor of Vermont: Isaac Tichenor (Federalist)
* Governor of Virginia: John Page (Democratic-Republican) (until December 7), William H. Cabell (Democratic-Republican) (starting December 7)

Lieutenant Governors
* Lieutenant Governor of Connecticut: John Treadwell (Federalist)
* Lieutenant Governor of Kentucky: vacant
* Lieutenant Governor of Massachusetts: Edward Robbins (political party unknown)
* Lieutenant Governor of New York: John Broome (Democratic-Republican)
* Lieutenant Governor of Rhode Island: Paul Mumford (political party unknown) (until July 20), vacant (starting July 20)
* Lieutenant Governor of South Carolina: Thomas Sumter, Jr. (Democratic-Republican)
* Lieutenant Governor of Vermont: Paul Brigham (Democratic-Republican)

## Events

* January 11 – Michigan Territory is created.
* February 11 – Jean Baptiste Charbonneau, son of Sacagawea is born with Meriwether Lewis aiding in the baby's delivery.
* February 15 – Harmony Society formally established in the U.S. at Harmony, Pennsylvania.
* March 1 – Justice Samuel Chase is acquitted of impeachment charges by the U.S. Senate.
* March 3 – Louisiana Territory is created.
* March 4 – Thomas Jefferson is sworn in for a second term as President of the United States, and George Clinton is sworn in as Vice President of the United States.
* April 7 – The Lewis and Clark Expedition departs Fort Mandan for the Pacific Ocean
* April 27 – Battle of Derne: United States Marines and Berbers attack the Tripolitan city of Derna (The "Shores of Tripoli").
* June 4 – The First Barbary War ends between Tripoli and the United States of America.
* June 11 – Detroit burns to the ground; most of the city is destroyed.
* June 13 – Lewis and Clark Expedition: Scouting ahead of the expedition, Meriwether Lewis and four companions sight the Great Falls of the Missouri River, confirming they are heading in the right direction.
* June 30 – Michigan Territory is effective.
* July 4 – Louisiana Territory is effective.
* October 18 – Lewis and Clark Expedition spot Mount Hood.
* November 7 – The Lewis and Clark Expedition arrives at the Pacific Ocean.

## Memoriam

* January 7 – Ebenezer Sproat, Continental Army officer, pioneer in the Ohio Country (aged 52; Marietta, OH, USA)
* January 9 – Noble Wimberly Jones, physician and delegate to the Continental Congress in 1781 and 1782 (aged 82; Savannah, GA, USA)
* February 4 – John Sloss Hobart, jurist and politician (aged 66; New York City, NY, USA)
* June 17 – John Ames, captain in the American Revolutionary War (aged 67; Bridgewater, MA, USA)
* August 28 – Christopher Gadsden, statesman (aged 81; Charleston, SC, USA)
* September 27 – William Moultrie, general (aged 74; Charleston, SC, USA)
* November 1 – Robert Alexander, Maryland politician (aged 65; London, Engalnd, UK)