As of the census[REF] of 2000, there were 394,542 people, 130,403 households, and 97,411 families residing in the county.
In the county, the population was spread out with 28.3% under the age of 18, 9.2% from 18 to 24, 31.3% from 25 to 44, 21.7% from 45 to 64, and 9.5% who were 65 years of age or older.