Contra Costa County ZIP Codes
California, United States · 52 codes
Contra Costa County in California has 52 ZIP codes, from 94505 to 94850, serving 52 places.
ZIP codes in Contra Costa
| ZIP Code | Places |
|---|---|
| 94505 | Discovery Bay |
| 94506 | Danville |
| 94507 | Alamo |
| 94509 | Antioch |
| 94511 | Bethel Island |
| 94513 | Brentwood |
| 94514 | Byron |
| 94516 | Canyon |
| 94517 | Clayton |
| 94518 | Concord |
| 94519 | Concord |
| 94520 | Concord |
| 94521 | Concord |
| 94522 | Concord |
| 94523 | Pleasant Hill |
| 94524 | Concord |
| 94525 | Crockett |
| 94526 | Danville |
| 94527 | Concord |
| 94528 | Diablo |
| 94529 | Concord |
| 94530 | El Cerrito |
| 94531 | Antioch |
| 94547 | Hercules |
| 94548 | Knightsen |
| 94549 | Lafayette |
| 94553 | Martinez |
| 94556 | Moraga |
| 94561 | Oakley |
| 94563 | Orinda |
| 94564 | Pinole |
| 94565 | Pittsburg |
| 94569 | Port Costa |
| 94570 | Moraga |
| 94572 | Rodeo |
| 94575 | Moraga |
| 94582 | San Ramon |
| 94583 | San Ramon |
| 94595 | Walnut Creek |
| 94596 | Walnut Creek |
| 94597 | Walnut Creek |
| 94598 | Walnut Creek |
| 94801 | Richmond |
| 94802 | Richmond |
| 94803 | El Sobrante |
| 94804 | Richmond |
| 94805 | Richmond |
| 94806 | San Pablo |
| 94807 | Richmond |
| 94808 | Richmond |
| 94820 | El Sobrante |
| 94850 | Richmond |
Frequently asked questions
What is the ZIP code of Contra Costa?
Contra Costa has 52 ZIP codes, from 94505 to 94850. The table lists the places each one serves.
How many places are listed in Contra Costa County?
52 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.