Sales tax in Unincorporated Alameda County, CA
The combined sales tax rate in Unincorporated Alameda County, CA is about 10.75%, and ranges from 7.75% to 10.75% depending on the exact address.
Estimated from 40 ZIP codes covering Unincorporated Alameda County. Enter your ZIP code in the calculator for a closer figure.
- ZIP codes
- 40 on file · 2 wholly inside the city limits
ZIP codes in Unincorporated Alameda County
40 on file — 2 wholly inside the city limits and 38 crossing them. Each has its own page.
2 ZIP codes wholly inside Unincorporated Alameda County
Every address in these is inside the city limits, so all of them pay Unincorporated Alameda County's rate.
38 ZIP codes crossing the city line
Part of each of these lies outside Unincorporated Alameda 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 |
|---|---|---|
| 94501 | 10.75% | Alameda and San Francisco |
| 94536 | 10.25% | Fremont |
| 94539 | 10.25% | Fremont |
| 94541 | 10.75% | Hayward |
| 94542 | 10.75% | Hayward and Union City |
| 94544 | 10.75% | Hayward and Union City |
| 94545 | 10.75% | Hayward and Union City |
| 94546 | 10.25% | Hayward |
| 94550 | 10.25% | Livermore and Unincorporated Santa Clara County |
| 94551 | 10.25% | Livermore, Pleasanton and Unincorporated Contra Costa County |
| 94552 | 10.25% | Fremont, Hayward and Union City |
| 94555 | 10.25% | Fremont and Union City |
| 94560 | 10.75% | Fremont and Newark |
| 94566 | 10.25% | Livermore and Pleasanton |
| 94568 | 10.25% | Dublin and Pleasanton |
| 94577 | 10.75% | San Leandro |
| 94578 | 10.75% | San Leandro |
| 94579 | 10.75% | San Leandro |
| 94580 | 10.25% | San Leandro |
| 94586 | 10.25% | Hayward and Pleasanton |
| 94587 | 10.75% | Hayward and Union City |
| 94588 | 10.25% | Hayward, Pleasanton and Unincorporated Contra Costa County |
| 94602 | 10.75% | Oakland and Piedmont |
| 94608 | 10.75% | Emeryville and Oakland |
| 94610 | 10.75% | Oakland and Piedmont |
| 94611 | 10.75% | Oakland, Piedmont and Unincorporated Contra Costa County |
| 94618 | 10.75% | Berkeley, Oakland and Piedmont |
| 94619 | 10.75% | Oakland |
| 94621 | 10.75% | Alameda and Oakland |
| 94704 | 10.25% | Berkeley and Oakland |
| 94705 | 10.75% | Berkeley and Oakland |
| 94706 | 10.75% | Albany, Berkeley and Unincorporated Contra Costa County |
| 94707 | 10.25% | Albany, Berkeley and Unincorporated Contra Costa County |
| 94708 | 10.25% | Berkeley and Unincorporated Contra Costa County |
| 94710 | 10.25% | Albany and Berkeley |
| 94720 | 10.25% | Berkeley and Oakland |
| 95377 | 8.25% | Tracy and Unincorporated San Joaquin County |
| 95391 | 7.75% | Mountain House and Unincorporated San Joaquin County |
Who levies sales tax across Unincorporated Alameda County's ZIP codes
Each government below levies its own share, but not all of them reach every address: the ZIP codes covering Unincorporated Alameda 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 40 ZIP codes | Jan 1, 2017 | California sales and use tax rates by jurisdiction |
| Unincorporated Alameda County | city | 3% | all 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Oakland | city | 3.5% | 10 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Hayward | city | 3.5% | 9 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Berkeley | city | 3% | 8 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Unincorporated Contra Costa County | city | 1.5% | 8 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Union City | city | 3.5% | 6 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Fremont | city | 3% | 5 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Pleasanton | city | 3% | 5 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Piedmont | city | 3% | 4 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| San Leandro | city | 3.5% | 4 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Albany | city | 3.5% | 3 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Livermore | city | 3% | 3 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Unincorporated San Joaquin County | city | 0.5% | 3 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Alameda | city | 3.5% | 2 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Dublin | city | 3% | 1 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Emeryville | city | 3.25% | 1 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Mountain House | city | 0.5% | 1 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Newark | city | 3.5% | 1 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| San Francisco | city | 1.375% | 1 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Tracy | city | 1% | 1 of 40 ZIP codes | Jul 1, 2026 | California sales and use tax rates by jurisdiction |
| Unincorporated Santa Clara County | city | 2.5% | 1 of 40 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 Alameda County, CA
- ZIP codes shared with a neighbour. 40 of Unincorporated Alameda County's 40 ZIP codes are also reached by Oakland, Hayward, Berkeley and Unincorporated Contra Costa County and 16 other places, so an address in one of them can owe a neighbour's rate instead of Unincorporated Alameda 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 Alameda County compares with the rest of California
Unincorporated Alameda County's ~10.75% is above what most ZIP codes carry in California. Of the state's 2,584 ZIP codes with a figure, 75 land on the same one, 2,494 carry a lower figure and 15 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 | |
| ~9.75% | 346 | |
| ~7.25% | 282 | |
| ~8.25% | 189 | |
| ~10.75% | 75 | Unincorporated Alameda County |
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.