Oakbrook Terrace is a city in DuPage County, Illinois, and is a suburb of Chicago. Per the 2020 census, the population was 2,751. It is the smallest town in DuPage County, in terms of area and population. History Oakbrook Terrace was originally named Utopia, a name suggested by a postmaster. The name Oakbrook Terrace was adopted in November 1959. Geography According to the 2021 census gazetteer files, Oakbrook Terrace has a total area of , of which (or 98.12%) is land and (or 1.88%) is water. Demographics As of the 2020 census there were 2,751 people, 1,346 households, and 668 families residing in the city. The population density was . There were 1,659 housing units at an average density of . The racial makeup of the city was 60.05% White, 9.09% African American, 0.62% Native American, 17.74% Asian, 0.04% Pacific Islander, 4.43% from other races, and 8.03% from two or more races. Hispanic or Latino of any race were 11.20% of the population. There were 1,346 households, out of which 27.27% had children under the age of 18 living with them, 36.26% were married couples living together, 9.21% had a female householder with no husband present, and 50.37% were non-families. 34.70% of all households were made up of individuals, and 13.30% had someone living alone who was 65 years of age or older. The average household size was 2.80 and the average family size was 2.16. The city's age distribution consisted of 14.3% under the age of 18, 10.3% from 18 to 24, 35.6% from 25 to 44, 22% from 45 to 64, and 17.9% who were 65 years of age or older. The median age was 35.8 years. For every 100 females, there were 101.6 males. For every 100 females age 18 and over, there were 100.9 males. The median income for a household in the city was $61,563, and the median income for a family was $89,900. Males had a median income of $54,911 versus $50,500 for females. The per capita income for the city was $37,713. About 7.8% of families and 16.7% of the population were below the poverty line, including 4.2% of those under age 18 and 8.1% of those age 65 or over. Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos can be of any race. Points