The Emancipation Proclamation freed very few slaves. The order did not apply to areas of the Union which still had slaves, nor did it apply to areas of the Confederacy occupied by the Union. Although, it did apply to unoccupied areas of the Confederacy. The government of the Confederacy was unlikely to follow an order issued by the Union during the Civil War.

It may have encouraged some slaves in the Confederacy to flee, if they found out about it.