Contra Costa County, California ZIP codes
52ZIP codes
30Cities and towns
1,159,422People in ZIP areas
209, 341, 350Area codes
Contra Costa County is in California and the Pacific Time zone. ZIP codes don’t follow county lines exactly, so a ZIP code listed here can reach into a neighboring county.
All ZIP codes in Contra Costa County
| ZIP code | City | Type | Population | Median income |
|---|---|---|---|---|
| 94505 | Discovery Bay | Standard | 14,970 | $146,480 |
| 94506 | Danville | Standard | 27,055 | $250,001 |
| 94507 | Alamo | Standard | 14,586 | $250,001 |
| 94509 | Antioch | Standard | 70,090 | $86,196 |
| 94511 | Bethel Island | PO Box only | 1,864 | $74,972 |
| 94513 | Brentwood | Standard | 69,755 | $142,223 |
| 94514 | Byron | Standard | 1,953 | $76,511 |
| 94516 | Canyon | PO Box only | 214 | $113,333 |
| 94517 | Clayton | Standard | 12,316 | $168,921 |
| 94518 | Concord | Standard | 27,345 | $112,094 |
| 94519 | Concord | Standard | 19,058 | $122,418 |
| 94520 | Concord | Standard | 37,381 | $82,479 |
| 94521 | Concord | Standard | 41,909 | $125,899 |
| 94522 | Concord | PO Box only | – | – |
| 94523 | Pleasant Hill | Standard | 34,592 | $142,586 |
| 94524 | Concord | PO Box only | – | – |
| 94525 | Crockett | Standard | 3,372 | $110,899 |
| 94526 | Danville | Standard | 32,584 | $225,097 |
| 94527 | Concord | PO Box only | – | – |
| 94528 | Diablo | PO Box only | 1,049 | $207,500 |
| 94529 | Concord | Unique | – | – |
| 94530 | El Cerrito | Standard | 26,401 | $128,529 |
| 94531 | Antioch | Standard | 46,387 | $120,927 |
| 94547 | Hercules | Standard | 26,302 | $129,397 |
| 94548 | Knightsen | PO Box only | 832 | $189,653 |
| 94549 | Lafayette | Standard | 28,420 | $234,516 |
| 94553 | Martinez | Standard | 48,643 | $124,130 |
| 94556 | Moraga | Standard | 15,998 | $215,720 |
| 94561 | Oakley | Standard | 46,368 | $134,678 |
| 94563 | Orinda | Standard | 19,378 | $250,001 |
| 94564 | Pinole | Standard | 18,761 | $127,717 |
| 94565 | Pittsburg | Standard | 100,488 | $95,556 |
| 94569 | Port Costa | PO Box only | 296 | $38,929 |
| 94570 | Moraga | PO Box only | – | – |
| 94572 | Rodeo | Standard | 8,976 | $91,484 |
| 94575 | Moraga | Standard | 975 | – |
| 94582 | San Ramon | Standard | 47,424 | $214,677 |
| 94583 | San Ramon | Standard | 39,583 | $184,898 |
| 94595 | Walnut Creek | Standard | 16,988 | $100,552 |
| 94596 | Walnut Creek | Standard | 23,417 | $135,635 |
| 94597 | Walnut Creek | Standard | 23,129 | $132,063 |
| 94598 | Walnut Creek | Standard | 27,206 | $186,225 |
| 94801 | Richmond | Standard | 33,591 | $81,728 |
| 94802 | Richmond | PO Box only | – | – |
| 94803 | El Sobrante | Standard | 27,659 | $118,447 |
| 94804 | Richmond | Standard | 44,891 | $91,037 |
| 94805 | Richmond | Standard | 14,670 | $111,152 |
| 94806 | San Pablo | Standard | 62,546 | $86,034 |
| 94807 | Richmond | PO Box only | – | – |
| 94808 | Richmond | PO Box only | – | – |
| 94820 | El Sobrante | PO Box only | – | – |
| 94850 | Richmond | Standard | – | – |
Cities and towns in Contra Costa County
- Concord 8 ZIPs
- Richmond 7 ZIPs
- Walnut Creek 4 ZIPs
- Moraga 3 ZIPs
- Antioch 2 ZIPs
- Danville 2 ZIPs
- El Sobrante 2 ZIPs
- San Ramon 2 ZIPs
- Alamo 1 ZIP
- Bethel Island 1 ZIP
- Brentwood 1 ZIP
- Byron 1 ZIP
- Canyon 1 ZIP
- Clayton 1 ZIP
- Crockett 1 ZIP
- Diablo 1 ZIP
- Discovery Bay 1 ZIP
- El Cerrito 1 ZIP
- Hercules 1 ZIP
- Knightsen 1 ZIP
- Lafayette 1 ZIP
- Martinez 1 ZIP
- Oakley 1 ZIP
- Orinda 1 ZIP
- Pinole 1 ZIP
- Pittsburg 1 ZIP
- Pleasant Hill 1 ZIP
- Port Costa 1 ZIP
- Rodeo 1 ZIP
- San Pablo 1 ZIP
Area codes in Contra Costa County
Questions
- How many ZIP codes are in Contra Costa County, CA?
- Contra Costa County has 52 ZIP codes, 38 of them standard ZIP codes for street addresses.
- What cities are in Contra Costa County?
- Contra Costa County ZIP codes cover Concord, Richmond, Walnut Creek, Moraga, Antioch, Danville, El Sobrante and San Ramon and 22 other places.
- What area code is Contra Costa County, CA?
- Contra Costa County uses area codes 209, 341, 350, 415, 510, 628, 707 and 925.
- What time zone is Contra Costa County in?
- Contra Costa County is in Pacific Time.
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