As of the 2000 United States Census, there were 30,000 people, 11,844 households, and 8,184 families in the county. The population density was 22.8/sqmi (8.81/km2). There were 16,612 housing units at an average density of 13 per square mile (5/km2). The racial makeup of the county was 89.35% White, 0.19% Black or African American, 7.52% Native American, 0.36% Asian, 0.01% Pacific Islander, 0.24% from other races, and 2.32% from two or more races. 0.77% of the population were Hispanic or Latino of any race. 32.2% were of German, 26.0% Norwegian and 5.2% Swedish ancestry.