What is the sales tax in Sioux City city? - The sales tax in Sioux City city of Iowa is 7% as of 2025. Use the Sioux City sales tax calculator to calculate the sales tax for any purchase in Sioux City.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Sioux City.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Woodbury | Iowa | Sioux City | 51105 | 6% | 0% | 1% | 7% |