What is the sales tax in Oak Brook city? - The sales tax in Oak Brook city of Illinois is 10% as of 2025. Use the Oak Brook sales tax calculator to calculate the sales tax for any purchase in Oak Brook.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Oak Brook.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| DuPage | Illinois | Oak Brook | 60523 | 6.25% | 1% | 1.75% | 10% |