As of the census of 2000, there were 21,675 people, 8,219 households, and 5,662 families residing in the village. The population density was 3,204.1 people per square mile (1,238.0/km²). There were 8,399 housing units at an average density of 1,241.6/sq mi (479.7/km²). The racial makeup of the village was 85.37% White, 2.57% African American, 0.12% Native American, 8.84% Asian, 0.01% Pacific Islander, 1.50% from other races, and 1.58% from two or more races. Hispanic or Latino of any race were 4.96% of the population.
There were 8,219 households out of which 30.0% had children under the age of 18 living with them, 57.4% were married couples living together, 8.4% had a female householder with no husband present, and 31.1% were non-families. 24.3% of all households were made up of individuals and 6.8% had someone living alone who was 65 years of age or older. The average household size was 2.54 and the average family size was 3.08.
In the village the population was spread out with 21.7% under the age of 18, 8.3% from 18 to 24, 31.1% from 25 to 44, 26.5% from 45 to 64, and 12.4% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 92.9 males. For every 100 females age 18 and over, there were 89.4 males.
The median income for a household in the village was $67,365, and the median income for a family was $78,889 (these figures had risen to $73,324 and $86,560 respectively as of a 2007 estimate). Males had a median income of $52,729 versus $35,827 for females. The per capita income for the village was $30,941. About 1.8% of families and 2.7% of the population were below the poverty line, including 2.6% of those under age 18 and 3.0% of those age 65 or over.