 The largest ancestry groups in Carroll County were English 51%, African 38.6%, and Scots-Irish 12.1%

The county population contained 24.50% under the age of 18, 9.60% from 18 to 24, 26.70% from 25 to 44, 25.70% from 45 to 64, and 13.60% who were 65 years of age or older.The median age was 38 years.For every 100 females, there were 99.20 males.