 According to the census of 2000, the largest ancestry groups in Morgan County were English 60.1%, Scots-Irish 12.71%, and African 11.24%

Of the 43,602 households 33.50% had children under the age of 18 living with them, 57.40% were married couples living together, 11.20% had a female householder with no husband present, and 27.90% were non-families.24.80% of households were one person and 9.40% were one person aged 65 or older.The average household size was 2.51 and the average family size was 2.99.