At the 2000 census^[1], there were 13,178 people, 5,623 households and 3,036 families residing in the city. The population density was 1,652.8 per square mile (638.4/km²). There were 5,847 housing units at an average density of 733.3/sq mi (283.3/km²). The racial makeup of the city was 95.83% White, 0.71% African American, 1.44% Native American, 0.46% Asian, 0.01% Pacific Islander, 0.26% from other races, and 1.29% from two or more races. Hispanic or Latino of any race were 0.86% of the population. 31.4% were of German, 28.1% were Finnish, 17.7% Norwegian, 7.1% Swedish, 6.8% Irish, and 6.1% United States or American ancestry according to Census 2000.

There were 5,623 households of which 29.4% had children under the age of 18 living with them, 35.8% were married couples living together, 14.3% had a female householder with no husband present, and 46.0% were non-families. 37.5% of all households were made up of individuals and 16.8% had someone living alone who was 65 years of age or older. The average household size was 2.23 and the average family size was 2.94.

Age distribution was 25.1% under the age of 18, 13.7% from 18 to 24, 26.3% from 25 to 44, 16.8% from 45 to 64, and 18.1% who were 65 years of age or older. The median age was 33 years. For every 100 females there were 85.1 males. For every 100 females age 18 and over, there were 79.4 males.

The median household income was $26,901, and the median family income was $35,212. Males had a median income of $27,677 versus $21,217 for females. The per capita income for the city was $15,744. About 11.8% of families and 17.6% of the population were below the poverty line, including 20.5% of those under age 18 and 16.0% of those age 65 or over.