Hanover Park is a village in Cook and DuPage counties in the U.S. state of Illinois, a suburb of Chicago. The population was 37,973 at the 2010 census. Ontarioville is a neighborhood within the village.GeographyHanover Park is located at .According to the 2010 census, Hanover Park has a total area of 6.435sqmi, of which 6.33sqmi is land and 0.105sqmi is water.DemographicsAs of the census of 2016, there were 38,210 people, 11,264 households, and 9,123 families residing in the village. The population density was 5,634.4 people per square mile (2,176.6/km²). There were 11,343 housing units at an average density of 1,669.6 per square mile (645.0/km²). The racial makeup of the village was 68.13% White, 6.13% African American, 0.28% Native American, 11.95% Asian, 0.02% Pacific Islander, 10.36% from other races, and 3.13% from two or more races. Hispanic or Latino of any race were 26.73% of the population.
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