 In terms of ancestry, 11.3% were of German, 10.3% were of Irish, 6.3% were of English, 5.4% were of American, 1.5% were of Dutch, 1.5% were of Polish.There were 3,261 households, of which 40.9 had children under the age of 18, 64 percent were married couples living together, 7.9 percent had a female householder with no husband present, and 23.7 percent were non-families.Of unmarried partner households, 89.5 percent were heterosexual, 6.3 percent were same-sex male, and 4.2 percent were same-sex female.