As of the 2000 United States Census, there were 6,634 people, 2,689 households, and 1,801 families in the county. The population density was 12 people per square mile (4/km2). There were 2,990 housing units at an average density of 5 per square mile (2/km2). The racial makeup of the county was 97.75% White, 0.21% Black or African American, 0.44% Native American, 0.06% Asian, 0.02% Pacific Islander, 0.83% from other races, and 0.69% from two or more races. 1.66% of the population were Hispanic or Latino of any race. 48.6% were of German, 10.4% Czech, 7.1% Irish and 7.0% English ancestry.