As of 2000, there were 19,157 households, out of which 31.90% had children under the age of 18 living with them, 54.70% were married couples living together, 10.20% had a female householder with no husband present, and 31.40% were non-families. 27.90% of all households were made up of individuals, and 13.10% had someone living alone who was 65 years of age or older. The average household size was 2.45 and the average family size was 2.99. In the county, the population was spread out, with 26.40% under the age of 18, 8.80% from 18 to 24, 25.00% from 25 to 44, 22.80% from 45 to 64, and 17.00% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 93.70 males. For every 100 females age 18 and over, there were 89.90 males.
As of 2000, there were 19,157 households, out of which 31.90% had children under the age of 18 living with them, 54.70% were married couples living together, 10.20% had a female householder with no husband present, and 31.40% were non-families. 27.90% of all households were made up of individuals, and 13.10% had someone living alone who was 65 years of age or older. The average household size was 2.45 and the average family size was 2.99. In the county, the population was spread out with 26.40% under the age of 18, 8.80% from 18 to 24, 25.00% from 25 to 44, 22.80% from 45 to 64, and 17.00% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 93.70 males. For every 100 females age 18 and over, there were 89.90 males.