As of the 2010 United States Census, there were 8,667 people, 3,838 households, and 2,505 families in the county. The population density was . There were 4,667 housing units at an average density of . The racial makeup of the county was 95.4% white, 0.4% Asian, 0.4% American Indian, 0.3% black or African American, 0.1% Pacific islander, 2.0% from other races, and 1.5% from two or more races. Those of Hispanic or Latino origin made up 6.7% of the population. In terms of ancestry, 45.3% were German, 21.1% were English, 17.3% were Irish, and 6.2% were American.