Of the 22,348 households 36.1% had children under the age of 18 living in them, 54.3% were opposite-sex married couples living together, 12.6% had a female householder with no husband present, and 5.2% had a male householder with no wife present. 5.0% of households were unmarried opposite-sex partnerships and 1.0% were same-sex married couples or partnerships. 21.7% of households were one person and 8.9% were one person aged 65 or older. The average household size was 2.69 and the average family size was 3.15.