Contra Costa County ZIP Codes (94505 – 94806) – California

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Contra Costa County is located in the eastern part of the San Francisco Bay Area, in the state of California, United States. ZIP codes in Contra Costa County range from 94505 to 94806 and are administered by the United States Postal Service (USPS) to ensure accurate mail delivery, logistics, and local administration.

Key Information About Contra Costa County ZIP Codes

ItemDetails
CountyContra Costa County
StateCalifornia
ZIP Code Range94505 – 94806
Largest CityConcord
CountryUnited States
ContinentNorth America
Postal AuthorityUnited States Postal Service (USPS)

ZIP Codes of Contra Costa County by City & Community

For more details on ZIP codes in Contra Costa County, see the tables of cities, towns, communities, rural areas, and notable places below.

Richmond & San Pablo Area (94801 – 94806)

Place / LocationZIP CodeState
Richmond94801California
Richmond Downtown94801California
Richmond Hilltop94806California
Richmond North94805California
Richmond Point Richmond94801California
Richmond Annex94805California
San Pablo94806California
San Pablo Downtown94806California

El Cerrito & Kensington Area (94530)

Place / LocationZIP CodeState
El Cerrito94530California
El Cerrito Hills94530California
Kensington (partial)94530California
Mira Vista94530California
Albany (nearby influence)94706California

Albany & Berkeley Adjacent Area (94706 – 94710)

(Albany is in Alameda County, but adjacent areas serve Contra Costa ZIP proximity and are merged accordingly)

Place / LocationZIP CodeState
Albany94706California
Berkeley (partial influence)94708California
Berkeley Hills (near Contra Costa border)94705California

Pinole & Hercules Area (94564 – 94547)

Place / LocationZIP CodeState
Pinole94564California
Hercules94547California
Montalvin Manor94547California
Bayview94547California
East Richmond Heights94803California

San Ramon / Danville Area (94526 – 94583)

Place / LocationZIP CodeState
San Ramon94582California
Danville94526California
Alamo94507California
Blackhawk94506California
Diablo Country Club94506California
Tassajara94582California

Walnut Creek Area (94595 – 94596)

Place / LocationZIP CodeState
Walnut Creek94595California
Walnut Creek Downtown94596California
Walnut Creek North94595California
Walnut Creek South94595California
Walnut Creek East94596California

Concord Area (94518 – 94521)

Place / LocationZIP CodeState
Concord94518California
Concord North94520California
Concord South94519California
Concord East94521California
Walnut Country94518California
North Concord94520California

Pleasant Hill & Martinez Area (94523 – 94553)

Place / LocationZIP CodeState
Pleasant Hill94523California
Contra Costa Centre94523California
Martinez94553California
Martinez Downtown94553California
Pacheco94553California
Reliez Valley94553California

Lafayette & Orinda Area (94549 – 94563)

Place / LocationZIP CodeState
Lafayette94549California
Lafayette Hills94549California
Orinda94563California
Sleepy Hollow94563California
Briones Regional Park Area94549California

Brentwood & Oakley Area (94513 – 94561)

Place / LocationZIP CodeState
Brentwood94513California
Brentwood East94513California
Oakley94561California
Oakley North94561California
Bethel Island94511California
Discovery Bay94505California
Knightsen94548California

Antioch & Bay Point Area (94509 – 94531)

Place / LocationZIP CodeState
Antioch94509California
Antioch South94509California
Antioch West94531California
Bay Point94565California
Pittsburg (nearby influence)94565California
Sobrante Park94565California

Pittsburg Area (94565)

Place / LocationZIP CodeState
Pittsburg94565California
Pittsburg Downtown94565California
Old Town Pittsburg94565California
Marina District94565California

Other Contra Costa County Communities & Rural Areas

Place / LocationZIP CodeState
Bay Point Hills94565California
Vine Hill94526California
El Sobrante (partial overlap)94803California
Rollingwood94803California
Tara Hills94803California
Crockett (nearby influence)94525California
Rodeo (nearby influence)94572California

About Contra Costa County ZIP Codes

Contra Costa County’s ZIP codes cover a wide range of communities spanning urban centers, suburban cities, and rural districts. From large cities like Concord, Antioch, and Walnut Creek to smaller communities such as Bethel Island, Bay Point, and Pinole, each ZIP code supports efficient mail delivery, logistics operations, emergency services, and accurate location identification for residents and businesses throughout the county.