As of the census of 2000, there were 29,843 people, 10,450 households, and 8,600 families residing in the city. The population density was 2,465.3 people per square mile (951.5/kmē). There were 10,649 housing units at an average density of 879.7/sq mi (339.5/kmē). The racial makeup of the city was 67.39% White, 0.39% African American, 0.15% Native American, 29.08% Asian, 0.08% Pacific Islander, 0.57% from other races, and 2.33% from two or more races. Hispanic or Latino of any race were 3.14% of the population.
There were 10,450 households out of which 38.7% had children under the age of 18 living with them, 75.0% were married couples living together, 4.9% had a female householder with no husband present, and 17.7% were non-families. 14.3% of all households were made up of individuals and 7.6% had someone living alone who was 65 years of age or older. The average household size was 2.83 and the average family size was 3.13. The population age distribution is as follows: 26.0% under the age of 18, 4.0% from 18 to 24, 23.8% from 25 to 44, 29.9% from 45 to 64, and 16.3% who were 65 years of age or older. The median age was 43 years. For every 100 females there were 96.5 males. For every 100 females age 18 and over, there were 92.6 males.
The median income for a household in the city was $139,895, and the median income for a family was $155,246. Males had a median income of $75,000 versus $66,240 for females. The per capita income for the city was $65,400. About 1.8% of families and 2.8% of the population were below the poverty line, including 3.2% of those under age 18 and 2.6% over 64.