As of the census of 2000, there were 30,150 people, 11,923 households, and 7,928 families residing in the city. The population density was 966.1/km² (2,501.5/mi²). There were 12,303 housing units at an average density of 394.2/km² (1,020.8/mi²). The racial makeup of the city was 87.28% White, 1.16% African American, 0.62% Native American, 5.96% Asian, 0.21% Pacific Islander, 1.76% from other races, and 3.00% from two or more races. Hispanic or Latino of any race were 4.44% of the population.
There are 11,923 households, out of which 33.9% have children under the age of 18 living with them, 53.9% were married couples living together, 8.9% had a female householder with no husband present, and 33.5% were non-families. 25.7% of all households were made up of individuals and 7.1% had someone living alone who was 65 years of age or older. The average household size was 2.51 and the average family size was 3.05.
In the city the population was spread out with 25.2% under the age of 18, 8.1% from 18 to 24, 33.2% from 25 to 44, 24.0% from 45 to 64, and 9.5% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 96.1 males. For every 100 females age 18 and over, there were 93.2 males.
The median income for a household in the city was $59,264, and the median income for a family was $68,580. Males had a median income of $48,476 versus $34,385 for females. The per capita income for the city was $26,483. About 3.6% of families and 5.1% of the population were below the poverty line, including 5.0% of those under age 18 and 5.0% of those age 65 or over.