There were 19,458 households, of which 42.0% had children under the age of 18, 43.7% were married couples living together, 21.7% had a female householder with no husband present, and 25.7% were non-families. 8.2% of Passaic households were same-sex partner households. 20.3% of all households were made up of individuals, and 8.4% had someone living alone who was 65 years of age or older. The average household size was 3.46 and the average family size was 3.93. city population comprised 30.8% under the age of 18, 12.5% from 18 to 24, 31.6% from 25 to 44, 16.9% from 45 to 64, and 8.1% who were 65 years of age or older. The median age was 29 years. For every 100 females, there were 99.5 males. For every 100 females age 18 and over, there were 97.4 males.