As of the census of 2000, there were 71,558 people, 27,784 households, and 20,254 families living in the county. The population density was 343 people per square mile (133/km2). There were 32,378 housing units at an average density of 155 per square mile (60/km2). The racial makeup of the county was 87.2% White, 2.4% Black or African American, 1.0% Native American, 4.2% Asian, 0.4% Pacific Islander, 1.4% from other races, and 3.4% from two or more races. 4.0% of the population were Hispanic or Latino of any race. 16.2% were of German, 11.2% English, 9.9% Irish, 7.2% United States or American and 6.0% Norwegian ancestry. 92.5% spoke English, 2.5% Spanish and 2.2% Tagalog as their first language.