Governor of Indiana: Jonathan Jennings (Democratic-Republican)
Governor of Kentucky: Gabriel Slaughter (Democratic-Republican) (until August 29), John Adair (Democratic-Republican) (starting August 29)
Governor of Louisiana: Jacques Villeré (Democratic-Republican) (until December 18), Thomas Bolling Robertson (Democratic-Republican) (starting December 18)
Governor of Maine: William King (Democratic-Republican) (starting March 15)
Governor of Maryland: Samuel Sprigg (Democratic)
Governor of Massachusetts: John Brooks (Federalist)
Governor of Mississippi: David Holmes (Democratic-Republican) (until January 5), George Poindexter (Democratic-Republican)
Governor of New Hampshire: Samuel Bell (Democratic-Republican)
Lieutenant Governor of South Carolina: William Youngblood (Democratic-Republican) (until month and day unknown), William Pinckney (Democratic-Republican) (starting month and day unknown)
February 6 – 86 free African American colonists sail from New York City to Freetown, Sierra Leone.
March 3 & 6 – Slavery in the United States: The Missouri Compromise becomes law.
March 15 – Maine is admitted as the 23rd U.S. state (seeHistory of Maine).
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.
Undated[]
Mount Rainier erupts over what is today Seattle.
Indiana University is founded as the Indiana State Seminary and renamed the Indiana College in 1846, to later be renamed Indiana University.
^Kuiper, Kathleen (1995). Merriam-Webster's Encyclopedia of Literature. Springfield: Merriam-Webster. p. 508. ISBN978-0-87779-042-6.
Further reading[]
Daniel Blowe (1820). A geographical, historical, commercial, and agricultural view of the United States of America; forming a complete emigrant's directory through every part of the republic ... London: Edwards & Knibb. OL14686561M.