Aiken County, South Carolina was formed from Barnwell, Edgefield, Lexington, and Orangeburg counties in 1871.

1880 Aiken County, South Carolina Census

1890 Aiken County, South Carolina Census

1900 Aiken County, South Carolina Census

1910 Aiken County, South Carolina Census

1920 Aiken County, South Carolina Census

1930 Aiken County, South Carolina Census