As of the census of 2000, there were 8,419 people, 3,035 households, and 2,415 families residing in the township. The population density was 269.5/km² (698.2/mi²). There were 3,159 housing units at an average density of 101.1/km² (262.0/mi²). The racial makeup of the township was 94.92% White, 2.24% African American, 0.05% Native American, 1.39% Asian, 0.01% Pacific Islander, 0.62% from other races, and 0.77% from two or more races. Hispanic or Latino of any race were 2.05% of the population.
There were 3,035 households out of which 39.8% had children under the age of 18 living with them, 70.7% were married couples living together, 6.3% had a female householder with no husband present, and 20.4% were non-families. 17.0% 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 2.76 and the average family size was 3.13.
In the township the population was spread out with 27.6% under the age of 18, 4.3% from 18 to 24, 31.3% from 25 to 44, 24.1% from 45 to 64, and 12.7% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 95.7 males. For every 100 females age 18 and over, there were 94.1 males.
The median income for a household in the township was $66,055, and the median income for a family was $70,587. Males had a median income of $51,965 versus $30,661 for females. The per capita income for the township was $26,180. About 2.7% of families and 3.0% of the population were below the poverty line, including 2.7% of those under age 18 and 6.0% of those age 65 or over.
The Township is served by the Easton Area School District.