Abolition of Slavery in the United States
States that abolished slavery before the Civil War
- Massachusetts 1780
- New Hampshire 1783
- Pennsylvania 1780-1850
- Rhode Island 1784-1842
- Connecticut 1784-1848
- New York 1799-1827
- New Jersey 1804-1846
If there are two dates, the first is when abolition began, and the second when there were no longer slaves in that state.
States that abolished slavery during the the Civil War
- Maryland: October 13, 1864
- Missouri: January 11, 1865
- Tennessee: January 1865
- West Virginia: February 3, 1865
States where slavery was abolished by the Emancipation Proclamation
- Virginia
- North Carolina
- South Carolina
- Florida
- Georgia
- Alabama
- Mississippi
- Arkansas
- Louisiana
- Texas
States that had slavery abolished by the 13th Amendment
- Delaware: December 6-18, 1865
- Kentucky
States admitted before the Civil War that never had slavery
- Vermont, 1791
- Ohio, 1803
- Indiana, 1816
- Illinois, 1818
- Michigan, 1837
- Iowa, 1846
- Wisconsin, 1848
- California, 1850
- Minnesota, 1858
- Oregon, 1859
- Kansas, 1861