1806

Events from the year 1806 in the United States.
==Incumbents==
===Federal Government===
* President: Thomas Jefferson (DR-VA)
* Vice President: George Clinton (DR-NY)
* Chief Justice: John Marshall (VA)
* Speaker of the House of Representatives: Nathaniel Macon (DR-NC)
* Congress: 9th
==Events==
* March 23 – The Lewis and Clark Expedition and their Corps of Discovery, having reached the Pacific Ocean after traveling through the Louisiana Purchase, begins its journey home.
* March 28 – Washington College (modern-day Washington & Jefferson College) is chartered by the Pennsylvania General Assembly.
* March 29 – Construction is authorized of the National Road (the first United States federal highway).
* April 18 – The U.S. Congress passes the Non-importation Act in an attempt to coerce Great Britain to suspend its impressment of American sailors and to respect American sovereignty and neutrality on the high seas.
* May 30 – Future President Andrew Jackson fights his second duel, killing Charles Dickinson who had accused Jackson's wife of bigamy; Jackson has a bullet lodged close to his heart.
* July 4 – Ship The Irish Rover sets sail from the Cove of Cork, Ireland for New York.
* July 7 – Cornerstone laid for America's First Cathedral, now known as the Baltimore Basilica. Architect: Benjamin Latrobe.
* July 15 – Pike Expedition: Near St. Louis, Missouri, United States Army Lieutenant Zebulon Pike leads an expedition from Fort Bellefontaine to explore the west.
* August 14 – The Lewis and Clark Expedition makes its return to the Mandan Indians while making its return trip to St. Louis.
* September 23 – The Lewis and Clark Expedition reaches St. Louis, Missouri, ending a successful exploration of the Louisiana Territory and the Pacific Northwest.
* November 15 – Pike Expedition: During his second exploratory expedition, Lieutenant Zebulon Pike sees a distant mountain peak while near the Colorado foothills of the Rocky Mountains which is later named Pikes Peak in his honor.
==Memoriam==
* February 20 – Lachlan McIntosh, military and political leader (aged 80; Savannah, GA, USA)
* April 10 – Horatio Gates, British soldier who served as an American general in the American Revolutionary War (aged 78; New York City, NY, USA)
* May 30 – Charles Dickinson, attorney that Andrew Jackson killed (in a duel) after Dickinson accused Jackson's wife of bigamy (aged 25; Logan County, KY, USA)
* October 9 – Benjamin Banneker, astronomer, surveyor (aged 74; Baltimore County, MD, USA)
* October 25 – Henry Knox, 1st United States Secretary of War, military officer of the Continental Army and later the United States Army (aged 56; Thomaston, MA (Now ME), USA)
==External links==
* 1806 in the United States
Category:United States History: Volume 3