As of the census of 2000, the county had 33,557 people living there. There were 12,047 households and 8,673 families living in the county. The population density was 28 people per square mile (11/km²). Clark County had 13,531 housing units. There were, on average, about 11 housing units per square mile (4/km²). The racial makeup of the county was 98.05% White, 0.13% Black or African American, 0.48% Native American, 0.30% Asian, 0.01% Pacific Islander, 0.56% from other races, and 0.47% from two or more races. 1.20% of the population were Hispanic or Latino of any race. 54.0% were of German, 9.0% Polish, 6.2% Norwegian and 6.1% United States or American ancestry according to Census 2000. 6.62% said that they spoke German, Pennsylvania German, or Dutch at home. 1.34% said that they spoke Spanish.