 16.4% were of German, 9.3% English, 9.3% American, 8.7% Irish and 5.9% Norwegian ancestry.90.2% spoke only English, while 7.7% spoke Spanish at home.There were 6,517 households, out of which 31.8% had children under the age of 18 living with them, 43.9% were married couples living together, 13.7% had a female householder with no husband present, and 36.9% were non-families.