As of the 2010 census, there were 5,089 people, 2,085 households, and 1,447 families residing in the county. The population density was . There were 2,835 housing units at an average density of . The racial makeup of the county was 98.9% white, 0.2% Asian, 0.2% American Indian, 0.1% black or African American, 0.2% from other races, and 0.4% from two or more races. Those of Hispanic or Latino origin made up 0.8% of the population. In terms of ancestry, 46.2% were German, 14.7% were American, 12.4% were Irish, and 9.5% were English.