This section of the Timeline of United States history concerns events from 1860 to 1899. See more

• 1880 – University of Southern California founded
• 1880 – U.S. population exceeds 50 million See more

• Timeline of the American Old West
• History of the United States (1849–1865)
• History of the United States (1865–1918) See more

• 1870 – 15th Amendment
• 1870 – First graduate programs (at Yale and Harvard)
• 1870 – Black Codes
• 1870 - Virginia, Mississippi, Texas, and Georgia are readmitted to the union See more

• 1890 – Sherman Antitrust Act
• 1890 – Jacob Riis published "How the Other Half Lives"
• 1890 – Sherman Silver Purchase Act See more

• Library of Congress. Time Line of African American History, 1852–1880
• H-SHGAPE discussion forum for people studying the Gilded Age and Progressive Era See more