The Office of the County Auditor was established by an act of the Illinois General Assembly in 1911, and except for Cook County, Illinois' largest counties have an elected County Auditor. The County Auditor is elected for a 4-year term, in the same general election as the President of the United States. DuPage County elected its first County Auditor in 1932, when the county's population reached 75,000. Since then, seven individuals have served as County Auditor. The current County Auditor, Bill White, has held the office since December 1, 2020.
| Name: Bob Grogan Years Served: County Auditor 2008-2020 |
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| Name: Jim Rasins Years Served: County Auditor 2000-2008 |
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| Name: William T. Jacklin Years Served: County Auditor 1973-2000 |
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| Name: Henry C. Cheney Years Served: County Auditor 1972-1973 |
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| Name: Leo D. La Fleur Years Served: County Auditor 1960-1972 |
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| Name: Robert D. Bradlee Years Served: County Auditor 1932-1960 |
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