As of the 2010 United States Census, there were 5,289 people, 2,180 households, and 1,379 families in the county. The population density was . There were 2,636 housing units at an average density of . The racial makeup of the county was 96.5% white, 0.7% black or African American, 0.6% American Indian, 0.4% Asian, 0.5% from other races, and 1.2% from two or more races. Those of Hispanic or Latino origin made up 1.9% of the population. In terms of ancestry, 56.3% were German, 16.9% were Norwegian, 11.4% were Irish, 7.4% were Swedish, 5.1% were Russian, and 1.1% were American.