1860 Census and Summaries
Slaves as a Percentage of Total Population, 1820-1860
While Virginia and the Upper South’s proportion of slaves in their total population declined from the 1830 to 1860, Augusta County’s percentage of slaves in the total population remained steady around 20 percent from 1820 to 1860.
U.S. Census Office, Eighth Census [1860]. Population of the United States in 1860, Compiled from the Original Returns of the Eighth Census. Washington, D.C., 1864