19th century in the United States

The 19th century in the United States refers to the period in the United States from 1801 through 1900 in the Gregorian calendar. For information on this period, see:

• History of the United States series:
• History of the United States (1789–1849)
• History of the United States (1849–1865)
• History of the United States (1865–1918)
• Historical eras:
• Jeffersonian era
• Era of Good Feelings
• Jacksonian era
• American Civil War
• Reconstruction era
• Gilded Age
• Progressive Era