what is the county of oakley ca
Oakley, CA Sales Tax Rate. The current total local sales tax rate in Oakley, CA is 8.500%. The December 2015 total local sales tax rate was also 8.500%. Oakley, CA is in Contra Costa County. Oakley is in the following zip codes: 94561. Sale-Tax.com strives to have the most accurate tax percentages available but tax rates are subject to change at any time. Always consult your local government tax offices for the latest official city, county, and state tax rates.