As of the 2010 United States Census, there were 8,508 people, 3,337 households, and 2,416 families residing in the county. The population density was . There were 3,680 housing units at an average density of . The racial makeup of the county was 98.3% white, 0.1% black or African American, 0.2% Native American, 0.4% Asian, 0.1% Pacific Islander, 0.2% from other races, and 0.7% from two or more races. Those of Hispanic or Latino origin made up 0.8% of the population. In terms of ancestry, 27.7% were German, 11.3% were English, 10.9% were Irish, and 9.2% were American.