What is the sales tax in Dupo city? - The sales tax in Dupo city of Illinois is 8.35% as of 2025. Use the Dupo sales tax calculator to calculate the sales tax for any purchase in Dupo.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Dupo.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| St. Clair | Illinois | Dupo | 62239 | 6.25% | 0% | 0% | 8.35% |