Itasca /aɪˈtæskə/ is a village in DuPage County, Illinois, United States. It is located approximately 27 miles northwest of downtown Chicago. It is close to O'Hare International Airport, major expressways, and rail transportation. The population was 8,649 at the 2010 census. In 2009, BusinessWeek rated Itasca as the 'Best Affordable Suburb' in the state of Illinois.