Washington Sales Tax Rates: Cowlitz County
Cowlitz County, Washington Sales Tax Rate 2026 Up to 8.2%
A county-wide sales tax rate of 1.2% is applicable to localities in Cowlitz County, in addition to the 6.5% Washington sales tax.
Some cities and local governments in Cowlitz County collect additional local sales taxes, which can be as high as 0.5%.Here's how Cowlitz County's maximum sales tax rate of 8.2% compares to other counties around the United States:
- Lower maximum sales tax than 82% of Washington counties
- Higher maximum sales tax than 60% of counties nationwide
Tax Rates By City in Cowlitz County, Washington
The total sales tax rate in any given location can be broken down into state, county, city, and special district rates. Washington has a 6.5% sales tax and Cowlitz County collects an additional 1.2%, so the minimum sales tax rate in Cowlitz County is 7.7% (not including any city or special district taxes). This table shows the total sales tax rates for all cities and towns in Cowlitz County, including all local taxes.
| City | Sales Tax Rate | Tax Jurisdiction |
|---|---|---|
| Longview | 8.2% | Longview |
| Kelso | 8.2% | Longview |
| Castle Rock | 7.9% | Castle Rock |
| Kalama | 8.2% | Kalama |
| Silverlake | 7.7% | Cowlitz |
| Toutle | 7.7% | Cowlitz |
| Ariel | 7.7% | Cowlitz |
| Cougar | 7.7% | Cowlitz |
| Ryderwood | 7.7% | Cowlitz |
| Carrolls | 7.7% | Cowlitz |
Washington Sales Tax Rates by Zip Code:
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Cowlitz County, Washington has a maximum sales tax rate of 8.2% and an approximate population of 70,691.
Sales tax rates in Cowlitz County are determined by four different tax jurisdictions, Castle Rock, Cowlitz, Kalama and Longview.
Back to Washington Sales Tax Handbook Sales tax rates for Cowlitz County are current as of June 2026
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