As of the 2010 census, there were 391,906 people, 163,975 households, and 95,246 families residing in the city, with a population density of .
In the city proper, the age distribution was 24.8% of the population under the age of 18, 10.9% from 18 to 24, 29.9% from 25 to 44, 21.5% from 45 to 64, and 12.9% who were 65 years of age or older, while the median age was 34 years.