Illinois Sales Tax Rates: Monroe County
Monroe County, Illinois Sales Tax Rate 2026 Up to 8.5%
A county-wide sales tax rate of 1.25% is applicable to localities in Monroe County, in addition to the 6.25% Illinois sales tax.
Some cities and local governments in Monroe County collect additional local sales taxes, which can be as high as 1%.Here's how Monroe County's maximum sales tax rate of 8.5% compares to other counties around the United States:
- Lower maximum sales tax than 52% of Illinois counties
- Higher maximum sales tax than 72% of counties nationwide
Tax Rates By City in Monroe 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 Monroe County collects an additional 1.25%, so the minimum sales tax rate in Monroe County is 7.5% (not including any city or special district taxes). This table shows the total sales tax rates for all cities and towns in Monroe County, including all local taxes.
| City | Sales Tax Rate | Tax Jurisdiction |
|---|---|---|
| Waterloo | 8.5% | Waterloo |
| Columbia | 8.5% | Columbia Route 3I 255 Business District |
| Valmeyer | 7.5% | Monroe |
| Fults | 7.5% | Monroe |
| Hecker | 7.5% | Monroe |
| Maeystown | 7.5% | Maeystown |
| Renault | 7.5% | Monroe |
Illinois Sales Tax Rates by Zip Code:
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Monroe County, Illinois has a maximum sales tax rate of 8.5% and an approximate population of 28,649.
Sales tax rates in Monroe County are determined by four different tax jurisdictions, Columbia Route 3I 255 Business District, Maeystown, Monroe and Waterloo.
Back to Illinois Sales Tax Handbook Sales tax rates for Monroe County are current as of June 2026
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