Write an article that answers the following question: How many more people were there than households?
As of the 2010 United States Census, there were 529,710 people, 200,934 households, and 134,323 families residing in the county. The population density was . There were 212,450 housing units at an average density of . The racial makeup of the county was 76.6% white, 8.6% Asian, 1.8% black or African American, 0.7% American Indian, 0.5% Pacific islander, 7.5% from other races, and 4.3% from two or more races. Those of Hispanic or Latino origin made up 15.7% of the population. In terms of ancestry, 20.8% were German American, 12.4% were English American, 12.1% were Irish American, and 3.2% were Americans.