As of the census of 2000, there were 56,063 people, 22,371 households, and 12,773 families residing in the city. The population density was 1,304.8/km² (3,378.9/mi²). There were 22,948 housing units at an average density of 534.1/km² (1,383.1/mi²). The racial makeup of the city was 55.8% White, 43.3% Hispanic or Latino, 5.59% Asian, 2.24% African American, 0.56% Native American, 0.17% Pacific Islander, 11.16% from other races, and 4.53% from two or more races.
There were 22,371 households out of which 25.8% had children under the age of 18, 44.3% were married couples living together, 9.0% had a female householder with no husband present, and 42.9% were non-families. 32.1% of all households were made up of individuals and 10.9% have someone living alone who is 65 or older. The average household size was 2.42 and the average family size was 2.99. The age distribution is as follows: 19.5% under the age of 18, 8.1% from 18 to 24, 33.3% from 25 to 44, 24.8% from 45 to 64, and 14.4% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 98.2 males. For every 100 females age 18 and over, there were 95.7 males.
The reported median income for a household in the city was $60,994; the median reported income for a family was $74,398 (these figures had risen to $67,789 and $85,459 respectively as of a 2007 estimate). Males reported a median income of $50,650 versus $39,912 for females. The reported per capita income for the city was $35,762. About 5.6% of families and 10.2% of the population reported incomes below the poverty line, including 11.7% of those under age 18 and 5.0% of those age 65 or over.