↑ "Union population 1864" aggregates 1860 population, average annual immigration 1855–1864, and population governed formerly by CSA per Kenneth Martis source. Contrabands and after the Emancipation Proclamation freedmen, migrating into Union control on the coasts and to the advancing armies, and natural increase are excluded.
↑ "Slave 1864, CSA" aggregates 1860 slave census of Virginia, North Carolina, South Carolina, Georgia and Texas. It omits losses from contraband and after the Emancipation Proclamation, freedmen migrating to the Union controlled coastal ports and those joining advancing Union armies, especially in the Mississippi Valley.
