← 1802 1801 1800 1803 in the United States → 1804 1805 1806
Decades:	1780s 1790s 1800s 1810s 1820s
See also:	History of the United States (1789–1849) Timeline of the American Revolution List of years in the United States

Events from the year1803 in the United States.

• President:Thomas Jefferson (DR-Virginia)
• Vice President:Aaron Burr (DR-New York)
• Chief Justice:John Marshall (Virginia)
• Speaker of the House of Representatives:Nathaniel Macon (DR-North Carolina)
• Congress:7th (until March 4),8th (starting March 4)

• January 30 –Monroe and Livingston sail forParis to discuss, and possibly buy,New Orleans; they end completing theLouisiana Purchase.
• February 24 –Marbury v. Madison: TheSupreme Court of the United States establishes the principle ofjudicial review.
• March 1 –Ohio is admitted as the 17thU.S. state, retroactive from August 7, 1953 (seeHistory of Ohio).
• April 30 –Louisiana Purchase is made by the United States fromFrance.
• July 4 – TheLouisiana Purchase is announced to the American people.
• October 20 – The Senate ratifies theLouisiana Purchase Treaty, doubling the size of the United States.
• November 30 – At the Cabildo building inNew Orleans,Spanish representativesGovernor Manuel de Salcedo and theMarqués de Casa Calvo officially transferLouisiana (New Spain) toFrench representative PrefectPierre Clément de Laussat.
• December 20 – France transfers the same land to the United States as theSale of Louisiana.

• First Barbary War (1801–1805)

• January 19 –Sarah Helen Whitman, poet, essayist, transcendentalist, spiritualist and a romantic interest of Edgar Allan Poe (died1878)
• February 2 –Albert Sidney Johnston, Confederate general (died1862)
• April 30 –Jeremiah E. Cary, politician (died1888)
• May 25 –Ralph Waldo Emerson, essayist and poet (died1882)
• June 4 –Gabriel J. Rains, Confederate brigadier general (died1881)
• June 25 –Sumner Lincoln Fairfield, poet and teacher (died1844)
• July 10 –William Todd, businessman, Canadian senate nominee (died1873)
• July 16 –Sarah Yorke Jackson, ActingFirst Lady of the United States (died1887)
• July 24 –Alexander Jackson Davis,Gothic architect (died1892)
• August 12 –John C. Young, educator and pastor (died1857)
• August 18 –Nathan Clifford,Associate Justice of the Supreme Court of the United States (died1881)
• August 27 –Edward Beecher, theologian (died1895)
• September 3 –Prudence Crandall, educationist (died1890)
• September 4 –Sarah Childress Polk,First Lady of the U.S. (died1891)
• September 27 –Samuel Francis Du Pont,rear admiral (died1865)
• September 29 –Mercator Cooper, sea captain (died1872)
• October 3 –John Gorrie, physician and inventor of mechanical cooling (died1855)
• October 21 -Solon Robinson, founder ofCrown Point, Indiana (died1880)
• October 24 –Albert Smith White, U.S. Senator from Indiana from 1839 to 1845 (died1864)
• November 14 –Jacob Abbott, children's writer (died1879)
• December 18 or 27 –William Allen, U.S. Senator from Ohio from 1837 to 1849 (died1879)

• February 22 –Jacques-Donatien Le Ray de Chaumont, "Father of the American Revolution" (born1726 in France; died in France)
• May 14 –William Smith, Episcopalian priest, educator, theologian, poet and historian (born1727)
• June 24 –Matthew Thornton, signatory of the Declaration of Independence (born1714 in Ireland)
• September 13 –John Barry, first commissioned U.S. naval officer (born1745 in Ireland)
• September 27 –Frances Brett Hodgkinson, actress (born1771 in Great Britain)
• October 2 –Samuel Adams, aFounding Father of the U.S. (born1722)
• December 30 –Francis Lewis, signatory of the Declaration of Independence (born1713 in Wales)
• William Verstille, portrait artist (born c. 1757)

• Timeline of United States history (1790–1819)

• Farrand, Max (1902). "The Commercial Privileges of the Treaty of 1803".The American Historical Review.7 (3):494–499.doi:10.2307/1833902.JSTOR 1833902.
• Lewis Leary. Leigh Hunt in Philadelphia. An American Literary Incident of 1803.The Pennsylvania Magazine of History and Biography, Vol. 70, No. 3 (July, 1946), pp. 270–280
• Robert Mills, Hennig Cohen. An Unpublished Diary by Robert Mills, 1803.The South Carolina Historical and Genealogical Magazine, Vol. 51, No. 4 (October, 1950), pp. 187–194
• Perlman, Bennard B. (1955). "Baltimore Mansion, 1801-03".Journal of the Society of Architectural Historians.14 (1):26–28.doi:10.2307/987719.JSTOR 987719.
• Knudson, Jerry W. (1970). "The Jeffersonian Assault on the Federalist Judiciary, 1802-1805; Political Forces and Press Reaction".The American Journal of Legal History.14 (1):55–75.doi:10.2307/844519.JSTOR 844519.
• Hoadley, John F. (1980). "The Emergence of Political Parties in Congress, 1789–1803".American Political Science Review.74 (3):757–779.doi:10.2307/1958156.JSTOR 1958156.
• Wagner, John W. (1984). "New York City Concert Life, 1801-5".American Music.2 (2):53–69.doi:10.2307/3051658.JSTOR 3051658.
• Gannon, Kevin M. (2001). "Escaping "Mr. Jefferson's Plan of Destruction": New England Federalists and the Idea of a Northern Confederacy, 1803-1804".Journal of the Early Republic.21 (3):413–443.doi:10.2307/3125268.JSTOR 3125268.
• Waters, Richard L. (2003). "An Interview with Ronald S. Kozlowski".Public Library Quarterly.22 (4):27–29.doi:10.1300/J118v22n04_04.

• Media related to1803 in the United States at Wikimedia Commons

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