As of the census[REF] of 2000, there were 17,929 people, 7,238 households, and 5,146 families residing in the county.
There were 7,238 households out of which 30.30% had children under the age of 18 living with them, 57.30% were married couples living together, 10.20% had a female householder with no husband present, and 28.90% were non-families.