As of the 2010 United States Census, there were 9,154 people, 3,792 households, and 2,595 families living in the county. The population density was . There were 5,428 housing units at an average density of . The racial makeup of the county was 98.6% white, 0.2% black or African American, 0.1% Asian, 0.1% American Indian, 0.1% from other races, and 1.0% from two or more races. Those of Hispanic or Latino origin made up 0.5% of the population. In terms of ancestry, 19.8% were American, 15.7% were Irish, 12.6% were German, and 8.9% were English.