What is the sales tax for Hawarden, Iowa? - The sales tax for Hawarden, Iowa is 4.2% as of 2026. 4.2% is the combine sales tax from 4.2% of Iowa state sales tax, 0% of local sales tax, and 0% of Sioux county sales tax.
| State | Iowa | State Tax | 4.2% |
|---|---|---|---|
| City | Hawarden | City Tax | 0% |
| County | Sioux | County Tax | 0% |
| Special Tax | 0% | ||
| Total Sales Tax | 4.2% | ||
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