 By comparison, the county had 15,714 residents in 1870, 20% of whom were White.In the county, there were 30,555 households, out of which 33.10% had children under the age of 18 living with them, 47.40% were married couples living together, 18.80% had a female householder with no husband present, and 29.60% were non-families.26.20% of all households were made up of individuals, and 10.60% had someone living alone who was 65 years of age or older.