As of the 2000 United States Census, there were 29,771 people, 10,642 households, and 7,311 families in the county. The population density was 66.5/sqmi (25.7/km2). There were 11,240 housing units at an average density of 25.1/sqmi (9.69/km2). The racial makeup of the county was 96.37% White, 0.80% Black or African American, 0.26% Native American, 1.14% Asian, 0.02% Pacific Islander, 0.65% from other races, and 0.75% from two or more races. 1.80% of the population were Hispanic or Latino of any race. 49.2% were of German, 13.3% Norwegian, 6.8% Swedish and 5.4% Irish ancestry.