As of the 2010 United States Census, there were 166,158 people, 68,645 households, and 43,747 families living in the county. The population density was . There were 73,701 housing units at an average density of . The racial makeup of the county was 93.4% white, 2.0% Asian, 1.4% black or African American, 0.3% American Indian, 1.0% from other races, and 1.8% from two or more races. Those of Hispanic or Latino origin made up 3.2% of the population. The largest ancestry groups were: