Demographics
At the 2010 census, there were 30,633 people living in the township. The population was 84.6% Non-Hispanic White, 3.3% Black or African American, 0.1% Native American and Alaskan Native, 6.0% Asian, 1.6% from two or more race, and 1.6% from some other race. 5.0% of the population were Hispanic or Latino.

At the 2000 census,[9] there were 19,220 people, 7,158 households and 5,611 families living in the township. The population density was 851.5 per square mile (328.8/km²) There were 7,405 housing units at an average density of 328.1/sq mi (126.7/km²). The racial makeup of the township was 93.77% White, 0.58% African American, 0.11% Native American, 4.31% Asian, 0.48% from other races, and 0.74% from two or more races. Hispanic or Latino of any race were 1.52% of the population.

There were 7,158 households of which 34.9% had children under the age of 18 living with them, 70.2% were married couples living together, 6.1% had a female householder with no husband present, and 21.6% were non-families. 18.2% of all households were made up of individuals and 7.3% had someone living alone who was 65 years of age or older. The average household size was 2.65 and the average family size was 3.03.

Age distribution was 25.2% under the age of 18, 5.3% from 18 to 24, 26.1% from 25 to 44, 29.3% from 45 to 64, and 14.2% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 95.4 males. For every 100 females age 18 and over, there were 91.7 males.

The median household income was $69,592, and the median family income was $78,695. Males had a median income of $60,325 versus $33,145 for females. The per capita income for the township was $30,202. About 1.3% of families and 2.3% of the population were below the poverty line, including 3.1% of those under age 18 and 2.1% of those age 65 or over.