What is the sales tax in Hydro city? - The sales tax in Hydro city of Oklahoma is 10.5% as of 2025. Use the Hydro sales tax calculator to calculate the sales tax for any purchase in Hydro.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Hydro.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Caddo | Oklahoma | Hydro | 73048 | 4.5% | 4.5% | 1.5% | 10.5% |