United States

Contra Costa Postal Codes

Complete directory of postal codes in this county

Location Information

43 counties

Counties

Contra Costa

Languages

  • English (United States)
  • Spanish (United States)

Coordinates

37.854290, -122.006640

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Country

United States

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Counties

Showing 43 results
Place Name
Postal Code
Alamo
94507
Antioch
94509
Antioch
94531
Berkeley
94708
Bethel Island
94511
Brentwood
94513
Byron
94514
Canyon
94516
Clayton
94517
Concord
94518
Concord
94519
Concord
94520
Concord
94521
Crockett
94525
Danville
94506
Danville
94526
Diablo
94528
Discovery Bay
94505
El Cerrito
94530
El Sobrante
94803
Hercules
94547
Knightsen
94548
Lafayette
94549
Martinez
94553
Moraga
94556
Moraga
94575
Oakley
94561
Orinda
94563
Pinole
94564
Pittsburg
94565
Pleasant Hill
94523
Port Costa
94569
Richmond
94801
Richmond
94804
Richmond
94805
Rodeo
94572
San Pablo
94806
San Ramon
94582
San Ramon
94583
Walnut Creek
94595
Walnut Creek
94596
Walnut Creek
94597
Walnut Creek
94598

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How to Find a Postal Code

Each administrative division maintains its own postal code for mail delivery purposes. Here are some tips for finding the correct postal code:

  • Search for your specific address using our search tool above
  • Browse through the list of counties in the region
  • Use the interactive map to locate your area
  • Contact your local post office for verification

Postal Code Tips

Postal codes may change occasionally. Always verify with official sources before important mailings.

Quick Facts

  • Country Code: US
  • Capital: Washington
  • Currency: Dollar (USD)
  • Phone Code: +1
  • Timezone: America/Adak (GMT-10)
  • Driving Side: Right
  • Voltage/Frequency: 120V (60Hz)
  • Plug Types:
    A - Type A plug B - Type B plug

Neighboring Countries

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