There were 75,700 households out of which 39.9 % had children under the age of 18 living with them . 53.5 % were married couples living together . There were 75,700 households out of which 39.9 % had children under the age of 18 living with them , 53.5 % were married couples living together , 12.8 % had a female householder with no husband present , and 28.2 % were non-families .