What is the sales tax in Rockham city? - The sales tax in Rockham city of South Dakota is 4.2% as of 2025. Use the Rockham sales tax calculator to calculate the sales tax for any purchase in Rockham.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Rockham.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Faulk | South Dakota | Rockham | 57470 | 4.2% | 0% | 0% | 4.2% |