|Covid-19|President: John Quincy Adams (DR/NR-Massachusetts)
Vice President: John C. Calhoun (D-South Carolina)
Chief Justice: John Marshall (Virginia)
Speaker of the House of Representatives: John W. Taylor (DR-New York) (until March 4), Andrew Stevenson (D-Virginia) (starting December 3)
Congress: 19th (until March 4), 20th (starting March 4)
February 28 – The Baltimore and Ohio Railroad is incorporated, becoming the first railroad in America offering commercial transportation of both people and freight.
March 12 – In Brown v. Maryland, the United States Supreme Court ruled that imported goods in their original package are under federal jurisdiction and thus not subject to state regulation.
March 16 – Freedom's Journal, the first African-American owned and published newspaper in the United States, is founded in New York City by John Russwurm.
May 21 – The Maryland Democratic Party is founded by supporters of Andrew Jackson in Baltimore and hosts its first meeting at the Baltimore Atheneum.
September 3 – Ho-Chunk leader Red Bird surrenders to U.S. officials, ending the Winnebago War.
J. J. Audubon's The Birds of America commences publication in the United Kingdom.
The original Delmonico's restaurant opens in Manhattan.
The first English translation of Christopher Columbus' journal by Samuel Kettell is published in Boston.
May 10 – William Windom, United States Senator from Minnesota from 1870 till 1881 and from 1881 till 1883. (died 1891)
May 23 – Milton Latham, United States Senator from California from 1860 till 1863. (died 1882)
June 7 – Alonzo J. Edgerton, United States Senator from Minnesota in 1881. (died 1896)
June 10 – Thomas W. Ferry, United States Senator from Michigan from 1871 till 1883. (died 1896)
July 19 – Orville H. Platt, United States Senator from Connecticut from 1879 till 1905. (died 1905)
September 26 – Daniel W. Voorhees, United States Senator from Indiana from 1877 to 1897. (died 1897)
September 28 – Aaron A. Sargent, United States Senator from California from 1873 till 1879. (died 1887)
October 13 – Robert Crozier, United States Senator from Kansas from 1873 till 1874. (died 1895)
Date unknown – Asahel C. Beckwith, United States Senator from Wyoming in 1893. (died 1896)
March 24 – Rufus King, lawyer, politician, diplomat, signatory of the United States Constitution (born 1755)
April 24 – Israel Pickens, United States Senator from Alabama from 1821 till 1825. (born 1780)
September 23 – Freeman Walker, United States Senator from Georgia from 1819 till 1821. (born 1780)
1827 in the United States Wikipedia
Events from the year 1827 in the United States.