There were 21,576 households, out of which 8,535 (39.6%) had children under the age of 18 living in them, 15,102 (70.0%) were opposite-sex married couples living together, 1,844 (8.5%) had a female householder with no husband present, 758 (3.5%) had a male householder with no wife present. There were 554 (2.6%) unmarried opposite-sex partnerships, and 101 (0.5%) same-sex married couples or partnerships. 3,119 households (14.5%) were made up of individuals, and 1,515 (7.0%) had someone living alone who was 65 years of age or older. The average household size was 2.97. There were 17,704 families (82.1% of all households); the average family size was 3.29.