Oak Brook is a suburb of Chicago in DuPage County, in Illinois in the Lombard-Oakbrook-Villa Park-Elmhurst (LOVE) area.

As of the census of 2000, there were 8,702 people, 3,124 households, and 2,589 families residing in the village. The population density was 411.7/km² (1,066.4/mi²). There were 3,258 housing units at an average density of 154.2/km² (399.2/mi²). The racial makeup of the village was 76.60% White, 1.37% African American, 20.11% Asian, 0.01% Pacific Islander, 0.22% from other races, and 1.69% from two or more races. Hispanic or Latino of any race were 2.39% of the population.

There were 3,124 households out of which 26.9% had children under the age of 18 living with them, 76.6% were married couples living together, 4.5% had a female householder with no husband present, and 17.1% were non-families. 15.3% 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 2.74 and the average family size was 3.04.

In the village the population was spread out with 19.6% under the age of 18, 6.9% from 18 to 24, 15.3% from 25 to 44, 36.4% from 45 to 64, and 21.8% who were 65 years of age or older. The median age was 50 years. For every 100 females there were 91.1 males. For every 100 females age 18 and over, there were 89.5 males.

The median income for a household in the village was $146,537, and the median income for a family was $169,718. Males had a median income of $100,000+ versus $40,128 for females. The per capita income for the village was $76,668. About 1.4% of families and 2.1% of the population were below the poverty line, including 4.7% of those under age 18 and 0.4% of those age 65 or over.


Information courtesy of US Census Bureau and wikipedia.org