As of the 2000 United States Census, there were 11,551 people, 4,608 households, and 3,170 families residing in the county. The population density was 5 people per square mile (2/km2). There were 5,281 housing units at an average density of 2 per square mile (1/km2). The racial makeup of the county was 98.86% White, 0.03% Black or African American, 0.29% Native American, 0.18% Asian, 0.05% Pacific Islander, 0.23% from other races, and 0.35% from two or more races. 0.71% of the population were Hispanic or Latino of any race. 46.0% were of German, 12.5% Irish, 8.6% American, 7.5% English and 5.4% Czech ancestry.