 18.5% were of German, 16.9% Finnish, 12.5% Norwegian, 11.8% Swedish and 5.8% Polish ancestry.95.5% spoke English, 1.8% Finnish and 1.1% Spanish as their first language.There were 12,064 households out of which 32.60% had children under the age of 18 living with them, 56.50% were married couples living together, 9.00% had a female householder with no husband present, and 30.30% were non-families.