 The racial makeup of the county was 92.8% white, 2.1% Asian, 0.8% black or African American, 0.6% American Indian, 0.1% Pacific islander, 1.0% from other races, and 2.5% from two or more races.Those of Hispanic or Latino origin made up 3.6% of the population.In terms of ancestry, 31.0% were German, 16.8% were English, 15.3% were Irish, 6.9% were Norwegian, 5.5% were Swedish, and 3.0% were American.