There were 11,159 households, out of which 32.2% had children under the age of 18 living with them, 62.8% were married couples living together, 6.1% had a female householder with no husband present, and 29.0% were non-families. 25.0% of all households were made up of individuals, and 8.9% had someone living alone who was 65 years of age or older. The average household size was 2.49 and the average family size was 3.02. In the township the population was spread out, with 23.6% under the age of 18, 6.8% from 18 to 24, 27.8% from 25 to 44, 25.8% from 45 to 64, and 16.1% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 90.7 males. For every 100 females age 18 and over, there were 86.9 males. The median income for a household in the township was $62,159, and the median income for a family was $73,482. Males had a median income of $57,415 versus $33,319 for females. The per capita income for the township was $31,792. About 2.2% of families and 4.0% of the population were below the poverty line, including 3.2% of those under age 18 and 9.1% of those age 65 or over. School tax millage rate- The North Allegheny School District (shared with Bradford Woods Borough, Franklin Park Borough and Marshall Township) in 2017 was 18.01. This ranked 36th highest/most expensive out of Allegheny County's 45 school districts [between Quaker Valley SD (#35) and North Hills SD (#37)].