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| Zip Code | State | Type | County | City | Area Code |
|---|---|---|---|---|---|
| Search for a ZIP code to see details | |||||
| County | ZIP Code | Major City | Type | Area Code |
|---|---|---|---|---|
| Contra Costa | 94505 | Discovery Bay, Byron | Standard | |
| Contra Costa | 94506 | Danville, Blackhawk | Standard | 925 |
| Contra Costa | 94507 | Alamo | Standard | |
| Contra Costa | 94509 | Antioch | Standard | 925 |
| Contra Costa | 94511 | Bethel Island | PO Box | |
| Contra Costa | 94513 | Brentwood | Standard | 925 |
| Contra Costa | 94514 | Byron, Discovery Bay | Standard | 925 |
| Contra Costa | 94516 | Canyon | PO Box | |
| Contra Costa | 94517 | Clayton | Standard | 925 |
| Contra Costa | 94518 | Concord | Standard | 925 |
| Contra Costa | 94519 | Concord | Standard | 925 |
| Contra Costa | 94520 | Concord | Standard | 925 |
| Contra Costa | 94521 | Concord | Standard | 925 |
| Contra Costa | 94522 | Concord | PO Box | 925 |
| Contra Costa | 94523 | Pleasant Hill, Concord | Standard | 925 |
| Contra Costa | 94524 | Concord | PO Box | 925 |
| Contra Costa | 94525 | Crockett | Standard | 510 |
| Contra Costa | 94526 | Danville | Standard | 925 |
| Contra Costa | 94527 | Concord | PO Box | 925 |
| Contra Costa | 94528 | Diablo | PO Box | |
| Contra Costa | 94529 | Concord | Unique | 925 |
| Contra Costa | 94530 | El Cerrito | Standard | |
| Contra Costa | 94531 | Antioch | Standard | 925 |
| Contra Costa | 94547 | Hercules, Rodeo | Standard | 510 |
| Contra Costa | 94548 | Knightsen | PO Box | |
| Contra Costa | 94549 | Lafayette | Standard | 925 |
| Contra Costa | 94553 | Martinez, Briones, Pacheco | Standard | 925 |
| Contra Costa | 94556 | Moraga | Standard | 925 |
| Contra Costa | 94561 | Oakley | Standard | 925 |
| Contra Costa | 94563 | Orinda | Standard | 925 |
| Contra Costa | 94564 | Pinole | Standard | 510 |
| Contra Costa | 94565 | Pittsburg, Bay Point | Standard | 925 |
| Contra Costa | 94569 | Port Costa | PO Box | |
| Contra Costa | 94570 | Moraga | PO Box | 925 |
| Contra Costa | 94572 | Rodeo | Standard | 510 |
| Contra Costa | 94575 | Moraga | PO Box | 925 |
| Contra Costa | 94582 | San Ramon | Standard | 925 |
| Contra Costa | 94583 | San Ramon | Standard | 925 |
| Contra Costa | 94595 | Walnut Creek | Standard | 925 510 707 |
| Contra Costa | 94596 | Walnut Creek | Standard | 510 707 925 |
| Contra Costa | 94597 | Walnut Creek | Standard | 925 |
| Contra Costa | 94598 | Walnut Creek | Standard | 510 707 925 |
| Contra Costa | 94801 | Richmond, N Richmond, North Richmond, Point Richmo... | Standard | 510 |
| Contra Costa | 94802 | Richmond | PO Box | 510 |
| Contra Costa | 94803 | El Sobrante, Richmond, San Pablo | Standard | 510 |
| Contra Costa | 94804 | Richmond | Standard | 510 |
| Contra Costa | 94805 | Richmond | Standard | 510 |
| Contra Costa | 94806 | San Pablo, Hilltop Mall, Richmond | Standard | |
| Contra Costa | 94807 | Richmond | PO Box | 510 |
| Contra Costa | 94808 | Richmond | PO Box | 510 |
| Contra Costa | 94820 | El Sobrante, Richmond | PO Box | 510 |
| Contra Costa | 94850 | Richmond | Standard | 510 |