There were 31,388 households. Of these, 25.1% had children under 18 years old. 38% had married people. 8.7% had only a woman as the main person (with no man). and 49.9% were not families. People living alone made up 30.6% of households, and 5.6% were people over 65 years old living alone. The average household size was 2.30. The average family size was 2.93.