[citation needed] As of the 2010 census, there were 9,117 people, 3,796 households, and 2,657 families in the county.

The racial makeup of the county was 96.8% white, 0.8% American Indian, 0.3% Asian, 0.1% black or African American, 0.4% from other races, and 1.6% from two or more races.

In terms of ancestry, 34.7% were German, 14.1% were Irish, 14.0% were English, 10.8% were Norwegian, and 6.9% were American.

Males had a median income of $51,830 versus $26,909 for females.

It has not voted for a Democratic presidential candidate since Franklin D. Roosevelt in 1936.