Genealogy Today | Directory Yankton County U.S. Census (1870 - 1930) Directory > Census Records > U.S.A. > South Dakota U.S. Federal Census records are divided into groups by state, then county, and in many cases by township as well.  1870 Census ADD NEW LISTING  1870 Census - South Dakota - Yankton County  from Ancestry.com Information about the 1870 Census  1880 Census ADD NEW LISTING  1880 Census - South Dakota - Yankton County  from Ancestry.com Information about the 1880 Census  1900 Census ADD NEW LISTING  Population4: 12,649 USGenWeb5: 1900 Census Images - Yankton 1900 Census - South Dakota - Yankton County  from Ancestry.com Information about the 1900 Census  1910 Census ADD NEW LISTING  Population4: 13,135 1910 Census - South Dakota - Yankton County  from Ancestry.com Information about the 1910 Census  1920 Census ADD NEW LISTING  Population4: 15,233 1920 Census - South Dakota - Yankton County  from Ancestry.com Information about the 1920 Census  1930 Census ADD NEW LISTING  Population4: 16,589 1930 Census - South Dakota - Yankton County  from Ancestry.com Information about the 1930 Census  Additional Information Yankton

⁴ Population of Counties by Decennial Census: 1900 to 1990, U.S. Bureau of the Census, 1995

⁵ The USGenWeb Census Project, USGenWeb Archives, 2004.