There were 17,851 households out of which 31.30% had children under the age of 18 living with them, 56.90% were married couples living together, 8.20% had a female householder with no husband present, and 30.80% were non-families.
In the county, the population was spread out with 25.30% under the age of 18, 8.10% from 18 to 24, 26.80% from 25 to 44, 23.40% from 45 to 64, and 16.40% who were 65 years of age or older.