Missouri Sales Tax Rates: St Charles County
St Charles County, Missouri Sales Tax Rate 2026 Up to 10.45%
A county-wide sales tax rate of 1.725% is applicable to localities in St Charles County, in addition to the 4.225% Missouri sales tax.
Some cities and local governments in St Charles County collect additional local sales taxes, which can be as high as 4.5%.Here's how St Charles County's maximum sales tax rate of 10.45% compares to other counties around the United States:
- Higher maximum sales tax than 80% of Missouri counties
- Higher maximum sales tax than 92% of counties nationwide
Tax Rates By City in St Charles County, Missouri
The total sales tax rate in any given location can be broken down into state, county, city, and special district rates. Missouri has a 4.225% sales tax and St Charles County collects an additional 1.725%, so the minimum sales tax rate in St Charles County is 5.95% (not including any city or special district taxes). This table shows the total sales tax rates for all cities and towns in St Charles County, including all local taxes.
| City | Sales Tax Rate | Tax Jurisdiction |
|---|---|---|
| O Fallon | 10.45% | Dardenne Prairie |
| Saint Peters | 8.95% | Saint Peters Shoppes Of Mid Rivers Cid Sp |
| Saint Charles | 8.95% | Saint Charles Riverpointe Community Improvement District |
| Saint Charles | 9.95% | Saint Charles Riverfro Sp |
| Saint Charles | 8.95% | Cottleville Old Town Sp |
| Wentzville | 10.45% | Wentzville |
| Lake Saint Louis | 8.95% | O Fallon |
| Foristell | 9.725% | Wright City |
| Defiance | 7.95% | New Melle |
| Augusta | 7.45% | Augusta |
| Portage Des Sioux | 6.95% | Portage Des Sioux |
| Saint Charles | 8.95% | Saint Charles West Clay Extension Cid Sp |
| West Alton | 6.95% | West Alton |
| New Melle | 7.95% | New Melle |
| Flinthill | 8.45% | Wentzville |
| Cottleville | 8.95% | Cottleville Old Town Sp |
Missouri Sales Tax Rates by Zip Code:
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St Charles County, Missouri has a maximum sales tax rate of 10.45% and an approximate population of 310,784.
Sales tax rates in St Charles County are determined by thirteen different tax jurisdictions, Augusta, Cottleville Old Town Sp, Dardenne Prairie, New Melle, O Fallon, Portage Des Sioux, Saint Charles Riverfro Sp, Saint Charles Riverpointe Community Improvement District, Saint Charles West Clay Extension Cid Sp, Saint Peters Shoppes Of Mid Rivers Cid Sp, Wentzville, West Alton and Wright City.
Back to Missouri Sales Tax Handbook Sales tax rates for St Charles County are current as of June 2026
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