Sales tax in Unincorporated Contra Costa County, CA
The combined sales tax rate in Unincorporated Contra Costa County, CA is about 8.75%, and ranges from 8.75% to 10.75% depending on the exact address.
Estimated from 47 ZIP codes covering Unincorporated Contra Costa County. Enter your ZIP code in the calculator for a closer figure.
- ZIP codes
- 47 on file · 7 wholly inside the city limits
ZIP codes in Unincorporated Contra Costa County
47 on file — 7 wholly inside the city limits and 40 crossing them. Each has its own page.
7 ZIP codes wholly inside Unincorporated Contra Costa County
Every address in these is inside the city limits, so all of them pay Unincorporated Contra Costa County's rate.
| ZIP code | Combined rate | Also reaches |
|---|---|---|
| 94505 | 8.75% | Unincorporated Alameda County and Unincorporated San Joaquin County |
| 94511 | 8.75% | no other city |
| 94514 | 8.75% | Unincorporated Alameda County |
| 94516 | ~8.75% | no other city |
| 94525 | 8.75% | no other city |
| 94548 | 8.75% | no other city |
| 94569 | 8.75% | no other city |
40 ZIP codes crossing the city line
Part of each of these lies outside Unincorporated Contra Costa County. An address in one may be taxed at a neighbour's rate instead, and the figure shown is the most likely one across the whole ZIP code.
| ZIP code | Combined rate | Also reaches |
|---|---|---|
| 94506 | 8.75% | Danville and San Ramon |
| 94507 | 8.75% | Danville and Walnut Creek |
| 94509 | 9.75% | Antioch and Pittsburg |
| 94513 | 8.75% | Antioch and Brentwood |
| 94517 | 8.75% | Clayton and Concord |
| 94518 | 9.75% | Concord and Walnut Creek |
| 94520 | 9.75% | Concord and Pleasant Hill |
| 94521 | 9.75% | Clayton and Concord |
| 94523 | 9.25% | Concord and Pleasant Hill |
| 94526 | 8.75% | Danville and San Ramon |
| 94528 | 8.75% | Danville |
| 94530 | 10.25% | El Cerrito and Richmond |
| 94531 | 9.75% | Antioch |
| 94547 | 9.25% | Hercules and Pinole |
| 94549 | 9.25% | Lafayette, Moraga and Orinda |
| 94551 | 10.25% | Livermore, Pleasanton and Unincorporated Alameda County |
| 94553 | 9.75% | Concord, Martinez and Pleasant Hill |
| 94556 | 9.75% | Lafayette and Moraga |
| 94561 | 8.75% | Antioch and Oakley |
| 94563 | 9.75% | Lafayette, Moraga and Orinda |
| 94564 | 10.25% | Hercules and Pinole |
| 94565 | 9.25% | Antioch, Concord and Pittsburg |
| 94572 | 8.75% | Hercules |
| 94582 | 9.75% | San Ramon |
| 94583 | 9.75% | Danville and San Ramon |
| 94588 | 10.25% | Hayward, Pleasanton and Unincorporated Alameda County |
| 94595 | 9.25% | Walnut Creek |
| 94596 | 9.25% | Walnut Creek |
| 94597 | 9.25% | Lafayette, Pleasant Hill and Walnut Creek |
| 94598 | 9.25% | Walnut Creek |
| 94611 | 10.75% | Oakland, Piedmont and Unincorporated Alameda County |
| 94706 | 10.75% | Albany, Berkeley and Unincorporated Alameda County |
| 94707 | 10.25% | Albany, Berkeley and Unincorporated Alameda County |
| 94708 | 10.25% | Berkeley and Unincorporated Alameda County |
| 94801 | 9.75% | Richmond |
| 94803 | 9.75% | Richmond and San Pablo |
| 94804 | 9.75% | El Cerrito, Richmond and San Pablo |
| 94805 | 9.75% | Richmond and San Pablo |
| 94806 | 9.75% | Pinole, Richmond and San Pablo |
| 95219 | 9% | Stockton and Unincorporated San Joaquin County |
Who levies sales tax across Unincorporated Contra Costa County's ZIP codes
Each government below levies its own share, but not all of them reach every address: the ZIP codes covering Unincorporated Contra Costa County reach into more than one city, and an address pays only the shares whose boundary it falls inside.
| Jurisdiction | Type | Rate | Applies to | Effective | Source |
|---|---|---|---|---|---|
| California | state | 7.25% | all 47 ZIP codes | Jan 1, 2017 | California sales and use tax rates by jurisdiction |
| Unincorporated Contra Costa County | city | 1.5% | all 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Unincorporated Alameda County | city | 3% | 8 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Concord | city | 2.5% | 7 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Richmond | city | 2.5% | 6 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Walnut Creek | city | 2% | 6 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Antioch | city | 2.5% | 5 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Danville | city | 1.5% | 5 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Lafayette | city | 2% | 4 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Pleasant Hill | city | 2% | 4 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| San Pablo | city | 2.25% | 4 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| San Ramon | city | 2.5% | 4 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Berkeley | city | 3% | 3 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Hercules | city | 2% | 3 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Moraga | city | 2.5% | 3 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Pinole | city | 3% | 3 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Albany | city | 3.5% | 2 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Clayton | city | 1.5% | 2 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| El Cerrito | city | 3% | 2 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Orinda | city | 2.5% | 2 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Pittsburg | city | 2% | 2 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Pleasanton | city | 3% | 2 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Unincorporated San Joaquin County | city | 0.5% | 2 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Brentwood | city | 1.5% | 1 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Hayward | city | 3.5% | 1 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Livermore | city | 3% | 1 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Martinez | city | 2.5% | 1 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Oakland | city | 3.5% | 1 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Oakley | city | 1.5% | 1 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Piedmont | city | 3% | 1 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Stockton | city | 1.75% | 1 of 47 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
No total is shown because more than one city is listed. An address falls inside only one of each, so these shares are alternatives rather than a stack, and adding them all up would give a figure nobody pays.
What can change the tax you pay in Unincorporated Contra Costa County, CA
- ZIP codes shared with a neighbour. 42 of Unincorporated Contra Costa County's 47 ZIP codes are also reached by Unincorporated Alameda County, Concord, Richmond and Walnut Creek and 25 other places, so an address in one of them can owe a neighbour's rate instead of Unincorporated Contra Costa County's.
- What you are buying. Categories are not taxed alike. The calculator switches between general merchandise, prepared food and lodging, which are the categories we hold rates for here.
How Unincorporated Contra Costa County compares with the rest of California
Unincorporated Contra Costa County's ~8.75% is above what most ZIP codes carry in California. Of the state's 2,584 ZIP codes with a figure, 373 land on the same one, 1,212 carry a lower figure and 999 a higher one. Across California the combined rate runs from 7.25% to 11.25%. See every city in California.
| Combined rate | ZIP codes | Which is this city |
|---|---|---|
| ~7.75% | 535 | |
| ~8.75% | 373 | Unincorporated Contra Costa County |
| ~9.75% | 346 | |
| ~7.25% | 282 | |
| ~8.25% | 189 |
Counted from ZIP-code figures. A tilde marks a band where some ZIP codes cross a tax boundary and are counted at their most likely rate.
How sales tax is collected
The seller generally collects the tax from the buyer at the point of sale and passes it to the authorities that levied it. In most states it is added at the till rather than included in the advertised price. Read how sales tax works, including sourcing rules, online purchases and who is required to collect.
Rates last verified: Sep 4, 2026. This is when the source was last read, not when this page was last edited.
TaxAndTips provides informational estimates from published tax-rate data. Actual tax treatment can depend on the product or service, the exact address, the transaction, exemption status and applicable law. For official obligations, consult the taxing authority or a qualified tax professional.
Why you can rely on these figures
- Published rates
- State and local rates compiled from the tax authorities that levy them.
- Every figure sourced
- See the jurisdiction breakdown and the document each rate came from.
- No signup
- Use the calculator immediately. Nothing to create, nothing to install.
- Missing means missing
- Where a rate is not verified we say so instead of showing a short total.