There were 21,279 households, 6,679 (32.9%) had children under the age of 18 living in them, 10,393 (51.3%) were opposite-sex married couples living together, 2,237 (11.0%) had a female householder with no husband present, 854 (4.2%) had a male householder with no wife present. There were 1,010 (5.0%) unmarried opposite-sex partnerships, and 195 (1.0%) same-sex married couples or partnerships. 5,358 households (26.4%) were one person and 2,415 (11.9%) had someone living alone who was 65 or older. The average household size was 2.53. There were 13,484 families (66.5% of households); the average family size was 3.04.