Oak Brook Homes for Sale offers the finest homes in Chicago suburbs. Oak Brook is a village located in DuPage County in IL. According to the 2010 census the population was 7,883. A village of Chicago, Including McDonald’s there are also some several companies headquarters on Oak Brook such as Federal Signal, Centerpoint properties, Sanfornd L.p, Treehouse Foods and Lions clubs international etc. Oak Brook was mainly knows as Fullersburg, named after Ben Fuller, an early pioneer. The median income in Oak Brook for a family was $152,209 according to 2010 census. The estimated median yearly earnings for a household in the Oak Brook village was $132,389 where the Male full?time workers had a median income of $104,981 versus $71,961 for the female workers. The per capita income for the village was $79,711. About 1.1% of families and 1.7% of the population were lived below the poverty line.