As of the 2000 United States Census, there were 13,088 people, 5,361 households, and 3,597 families in the county. The population density was 22.5/sqmi (8.70/km2). There were 5,855 housing units at an average density of 10.1/sqmi (3.89/km2). The racial makeup of the county was 96.78% White, 0.18% Black or African American, 1.00% Native American, 0.30% Asian, 0.02% Pacific Islander, 0.94% from other races, and 0.79% from two or more races. 1.92% of the population were Hispanic or Latino of any race. 37.8% were of Norwegian and 36.8% German ancestry.