Iowa Sales Tax Rates: Union County
Union County, Iowa Sales Tax Rate 2026 Up to 7%
A county-wide sales tax rate of 1% is applicable to localities in Union County, in addition to the 6% Iowa sales tax.
None of the cities or local governments within Union County collect additional local sales taxes.Here's how Union County's maximum sales tax rate of 7% compares to other counties around the United States:
- Higher maximum sales tax than any other Iowa counties
- Lower maximum sales tax than 56% of counties nationwide
Tax Rates By City in Union County, Iowa
The total sales tax rate in any given location can be broken down into state, county, city, and special district rates. Iowa has a 6% sales tax and Union County collects an additional 1%, so the minimum sales tax rate in Union County is 7% (not including any city or special district taxes). This table shows the total sales tax rates for all cities and towns in Union County, including all local taxes.
| City | Sales Tax Rate | Tax Jurisdiction |
|---|---|---|
| Creston | 7% | Creston |
| Afton | 7% | Afton |
| Lorimor | 7% | Lorimor |
| Arispe | 7% | Arispe |
| Cromwell | 7% | Cromwell |
| Shannon City | 7% | Shannon City |
| Thayer | 7% | Thayer |
Iowa Sales Tax Rates by Zip Code:
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Union County, Iowa has a maximum sales tax rate of 7% and an approximate population of 9,714.
Sales tax rates in Union County are determined by seven different tax jurisdictions, Afton, Arispe, Creston, Cromwell, Lorimor, Shannon City and Thayer.
Back to Iowa Sales Tax Handbook Sales tax rates for Union County are current as of June 2026