31.4 million persons with 4 million slaves
Geography: Add California, Minnesota, Oregon.
Publications: https://www.census.gov/prod/www/decennial.html
- Preliminary report on the eighth census. 1860. Washington, D.C.: Government Printing Office, 1862. Data and Statistical Services (DSS): Decennial Census. Firestone Oversize HA201 1860 .A4q and Preliminary report on the eighth census, 1860 [electronic resource]
- Population of the United States in 1860: compiled from the original returns of the eighth census. Washington, D.C.: Government Printing Office, 1864. Data and Statistical Services (DSS): Decennial Census Oversize HA201 1860 .A3q and Population of the United States in 1860 [electronic resource]
- Statistics of the United States, (including mortality, property, &c.) in 1860; compiled from the original returns and being the final exhibit of the eighth census, under the direction of the Secretary of the Interior. Washington, D.C.: Government Printing Office, 1866. Data and Statistical Services (DSS): Decennial Census. Oversize HA201 1860 .A5q and http://purl.access.gpo.gov/GPO/LPS48491
- The United States on the eve of the Civil War: as described in the 1860 census. Washington, D.C.: U.S. Civil War Centennial Commission: Government Printing Office, 1963. Donald E. Stokes Library (SPR) HA209 1860.A3
- Note: the census of slaves and slaveholders was published in the agriculture volume, Agriculture of the United States in 1860, Firestone Oversize Oversize HD1753.1860 .A2q and online. There is a table for each state, “Slaveholders and Slaves,” listing all the counties and for each total slaveholders, total slaves, and then by groups from 1 slave to 1000+ slaves.