Illinois Sales Tax Rates: Mercer County
Mercer County, Illinois Sales Tax Rate 2026 Up to 8.25%
A county-wide sales tax rate of 1% is applicable to localities in Mercer County, in addition to the 6.25% Illinois sales tax.
Some cities and local governments in Mercer County collect additional local sales taxes, which can be as high as 1%.Here's how Mercer County's maximum sales tax rate of 8.25% compares to other counties around the United States:
- Lower maximum sales tax than 58% of Illinois counties
- Higher maximum sales tax than 69% of counties nationwide
Tax Rates By City in Mercer County, Illinois
The total sales tax rate in any given location can be broken down into state, county, city, and special district rates. Illinois has a 6.25% sales tax and Mercer County collects an additional 1%, so the minimum sales tax rate in Mercer County is 7.25% (not including any city or special district taxes). This table shows the total sales tax rates for all cities and towns in Mercer County, including all local taxes.
| City | Sales Tax Rate | Tax Jurisdiction |
|---|---|---|
| Aledo | 7.25% | Mercer |
| Sherrard | 7.25% | Mercer |
| Viola | 8.25% | Viola |
| New Boston | 7.25% | Mercer |
| New Windsor | 7.75% | Henry |
| Reynolds | 7.25% | Mercer |
| Joy | 7.25% | Mercer |
| Keithsburg | 7.25% | Henderson |
| Matherville | 7.25% | Mercer |
| Preemption | 7.25% | Mercer |
| Seaton | 8% | Warren |
| North Henderson | 8% | Warren |
Illinois Sales Tax Rates by Zip Code:
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Mercer County, Illinois has a maximum sales tax rate of 8.25% and an approximate population of 13,564.
Sales tax rates in Mercer County are determined by five different tax jurisdictions, Henderson, Henry, Mercer, Viola and Warren.
Back to Illinois Sales Tax Handbook Sales tax rates for Mercer County are current as of June 2026
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