1820

Events from the year 1820 in the United States.
==Incumbents==
===Federal Government===
* President: James Monroe (DR-VA)
* Vice President: Daniel D. Tompkins (DR-NY)
* Chief Justice: John Marshall (VA)
* Speaker of the House of Representatives: Henry Clay (DR-KY) (until October 28), John W. Taylor (DR-NY) (starting November 15)
* Congress: 16th
==Events==
* February 6 – 86 free African American colonists sail from New York City to Freetown, Sierra Leone.
* March 3 – Slavery in the United States: The Missouri Compromise becomes law.
* March 6 – Slavery in the United States: President James Monroe signed the Missouri Compromise.
* March 15 – Maine admitted becomes the 23rd U.S. state.
* April 24 – The Land Act of 1820 reduces the price of land in the Northwest Territory and Missouri Territory encouraging Americans to settle in the west.
* August 7 – The 1820 United States Census is conducted, eventually determining a population of 11,176,475.
* December 3 – U.S. presidential election, 1820: James Monroe is re-elected, virtually unopposed.
==Memoriam==
* February 5 – William Ellery, signer of the United States Declaration of Independence, Chief Justice of the Rhode Island Supreme Court (aged 92; Newport, RI, USA)
* March 11 – Benjamin West, American-born painter of historical scenes (aged 81; London, England, UK)
* March 22 – Stephen Decatur, U.S. Navy commander (aged 41; Washington, DC, USA)
* April 14 – Levi Lincoln Sr., statesman from Massachusetts (aged 70; Worcester, MA, USA)
* April 20 – James Morris III, Continental Army officer from Connecticut (aged 68; Goshen, CT, USA)
* July 10 – William Wyatt Bibb, U.S. Senator from Georgia from 1813 to 1816, 1st Governor of Alabama (aged 38; Elmore County, AL, USA)
* August 12 – Manuel Lisa, fur trader (aged 47; St. Louis, MO Territory, USA)
* September 3 – Benjamin Henry Latrobe, architect (aged 56; New Orleans, LA, USA)
* September 21 – Joseph Rodman Drake, poet (aged 25; Bronx County, NY, USA)
* September 26 – Daniel Boone, pioneer (aged 85; Defiance, MO Territory, USA)
* September 29 – Barthelemy Lafon, Creole architect, engineer, city planner, surveyor and smuggler (aged 51; New Orleans, LA, USA)
* October 4 – Thomas Hope, architect (aged 62; Kingsport, TN, USA)
* November 8 – Lavinia Stoddard, poet and educationalist (aged 33; Blakely, AL, USA)
* November 29 – William Richardson Davie, 10th Governor of North Carolina from 1798 to 1799 (aged 64; Chester County, SC, USA)
==External links==
* 1820 in the United States
Category:United States History: Volume 5