The city's racial makeup was 93.4% White, 0.9% African American, 2.8% Native American, 1.0% Asian, 0.1% Pacific Islander, 0.6% from other races, and 1.4% from two or more races. Hispanic or Latino of any race were 1.9% of the population. The top six ancestry groups were Norwegian (36.4%), German (34.7%), Irish (10.6%), French (6.5%), Polish (6.2%), English (6.1%). There were 21.4% of the population under the age of 18, 22.9% from 18 to 24, 27.7% from 25 to 44, 18.3% from 45 to 64, and 9.8% who were 65 years of age or older. The median age was 28 years. For every 100 females, there were 102.0 males. For every 100 females age 18 and over, there were 100.2 males.