County rate guide · Reviewed August 11, 2026
Rock Island County, Illinois Sales Tax Rate
The combined sales tax rate in Rock Island County, Illinois is 7.25% as of 2026. That includes the Illinois state rate of 6.25%.
Unincorporated-area rate.
Sales tax calculator for Rock Island County
- Sales tax (7.25%)
- $7.25
- Total with tax
- $107.25
How this rate is composed
The Illinois state sales tax rate is 6.25%. The combined 7.25% rate for Rock Island County comes from Illinois DOR machine-readable rate file (ORDMACHE) (2026 Q3).
Combined general-merchandise retailers' occupation tax rate for the municipality or unincorporated county area.
Business-district and home-rule address-level layers can change the rate at specific addresses; grocery rates differ.
Rates change on official schedules — confirm the current rate and effective date against the source above before filing.
Related local sales tax rates in Illinois
Compare the county and same-type jurisdictions with the closest combined rates.
Rock Island County sales tax questions
What is the sales tax rate in Rock Island County, Illinois?
The combined sales tax rate is 7.25%. It includes the Illinois state rate of 6.25% and applicable local rates.
How much sales tax is charged on a $100 purchase in Rock Island County?
At the 7.25% combined rate, a $100 taxable purchase produces $7.25 in sales tax.
When was the Rock Island County sales tax rate reviewed?
Prophit.ai reviewed this guide on 2026-08-11 using Illinois DOR machine-readable rate file (ORDMACHE). Confirm the official source before filing because rates can change.
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