Williamson County, Illinois sales tax rate: 7.25%
The county-wide general sales tax rate in Williamson County, Illinois is 7.25%, of which 6.25% is the Illinois state rate. Some cities and districts add more, up to 9.75% in Carbondale.
Breakdown of the highest rate, 9.75%
| Level | Jurisdiction | Rate |
|---|---|---|
| State | Illinois | 6.25% |
| County | Williamson County | 1.0% |
| City | Largest city in county | 2.5% |
| Special | Transit / district | 0.0% |
Neighboring counties
- Franklin County, IL 8.25%
- Jackson County, IL 7.25%
- Johnson County, IL 7.75%
- Saline County, IL 8.0%
- Union County, IL 8.5%
Other counties in Illinois
- Adams County 6.5%
- Alexander County 6.25%
- Bond County 7.25%
- Boone County 7.75%
- Brown County 7.75%
- Bureau County 7.25%
- Calhoun County 8.0%
- Carroll County 6.5%
- Cass County 8.25%
- Champaign County 7.5%
- Christian County 7.25%
- Clark County 7.25%
- Clay County 6.75%
- Clinton County 6.25%
- Coles County 7.25%
- Cook County 9.0%
- Crawford County 6.25%
- Cumberland County 7.25%
- De Witt County 6.25%
- DeKalb County 6.25%
- Douglas County 7.25%
- DuPage County 8.0%
- Edgar County 8.25%
- Edwards County 7.25%
- Effingham County 6.5%
- Fayette County 7.25%
- Ford County 7.25%
- Franklin County 8.25%
- Fulton County 7.75%
- Gallatin County 7.25%
- Greene County 7.25%
- Grundy County 6.25%
- Hamilton County 8.25%
- Hancock County 6.25%
- Hardin County 8.25%
- Henderson County 7.25%
- Henry County 7.75%
- Iroquois County 6.5%
- Jackson County 7.25%
- Jasper County 7.25%
- Jefferson County 6.75%
- Jersey County 8.0%
- Jo Daviess County 7.25%
- Johnson County 7.75%
- Kane County 7.0%
- Kankakee County 6.25%
- Kendall County 7.25%
- Knox County 7.75%
- LaSalle County 6.5%
- Lake County 7.0%
- Lawrence County 7.25%
- Lee County 7.75%
- Livingston County 7.25%
- Logan County 8.25%
- Macon County 7.75%
- Macoupin County 7.25%
- Madison County 6.6%
- Marion County 7.5%
- Marshall County 6.25%
- Mason County 7.25%
- Massac County 6.25%
- McDonough County 8.0%
- McHenry County 7.25%
- McLean County 7.25%
- Menard County 8.25%
- Mercer County 7.25%
- Monroe County 7.5%
- Montgomery County 7.25%
- Morgan County 7.25%
- Moultrie County 7.25%
- Ogle County 6.25%
- Peoria County 7.25%
- Perry County 7.75%
- Piatt County 7.25%
- Pike County 7.75%
- Pope County 8.25%
- Pulaski County 6.25%
- Putnam County 6.25%
- Randolph County 7.25%
- Richland County 7.75%
- Rock Island County 7.25%
- Saline County 8.0%
- Sangamon County 7.25%
- Schuyler County 8.25%
- Scott County 7.25%
- Shelby County 7.25%
- St. Clair County 6.6%
- Stark County 7.5%
- Stephenson County 6.75%
- Tazewell County 6.75%
- Union County 8.5%
- Vermilion County 6.5%
- Wabash County 7.25%
- Warren County 8.0%
- Washington County 6.25%
- Wayne County 7.0%
- White County 7.25%
- Whiteside County 7.75%
- Will County 7.0%
- Winnebago County 7.75%
- Woodford County 8.25%
Rates as of Jan 2026. Source: EvvyTools US Sales Tax Rates by ZIP Code (2026). General rate on tangible goods; not tax advice. Verify with your state Department of Revenue before filing or pricing.