 17.9% were of German, 10.8% American, 9.3% Czech, 6.0% Irish and 5.6% English ancestry according to Census 2000.81.6% spoke English and 17.4% Spanish as their first language.There were 5,336 households, out of which 34.70% had children under the age of 18 living with them, 58.20% were married couples living together, 10.50% had a female householder with no husband present, and 27.10% were non-families.