There were 78,978 households, out of which 26,693 (33.8%) had children under the age of 18 living in them, 40,930 (51.8%) were opposite-sex married couples living together, 7,545 (9.6%) had a female householder with no husband present, 2,978 (3.8%) had a male householder with no wife present. There were 3,218 (4.1%) unmarried opposite-sex partnerships, and 463 (0.6%) same-sex married couples or partnerships. 18,475 households (23.4%) were made up of individuals, and 4,146 (5.2%) had someone living alone who was 65 years of age or older. The average household size was 2.61. There were 51,453 families (65.1% of all households); the average family size was 3.13.