What is the sales tax in Ofallon city? - The sales tax in Ofallon city of Illinois is 9.35% as of 2025. Use the Ofallon sales tax calculator to calculate the sales tax for any purchase in Ofallon.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Ofallon.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| St. Clair | Illinois | OFallon | 62269 | 6.25% | 1% | 0% | 9.35% |