The above Contra Costa County map shows zip code polygons for the county. Data source below is the new Census Tiger Zip Code data. Contra Costa zip code database below is sorted by city and zip code. Find zip codes for these cities and communities in Contra Costa County, California: El Cerrito, Hercules, Pinole, Richmond, San Pablo, Clayton, Concord, Danville, Lafayette, Martinez Zip Codes.
2026/2028 Election Update
Interactive Congressional Map: Compare California's 119th vs. New Boundaries
Use our simultaneous map overlay to see if your local district has changed.
Contra Costa County Zip Codes
Acalanes Ridge, Alamo, Alhambra Valley and Antioch Zip Codes
Acalanes Ridge 94597
Alamo 94507
Alamo 94526
Alamo 94528
Alamo 94595
Alamo 94596
Alhambra Valley 94549
Alhambra Valley 94553
Antioch 94509
Antioch 94513
Antioch 94531
Antioch 94561
Antioch 94565
Bay Point, Bayview, Bethel Island, Blackhawk, Brentwood and Byron Zip Codes
Bay Point 94519Bay Point 94520
Bay Point 94521
Bay Point 94565
Bayview 94806
Bethel Island 94561
Blackhawk 94506
Brentwood 94513
Brentwood 94531
Byron 94505
Byron 94513
Byron 94514
Camino Tassajara, Castle Hill, Clayton, Clyde, Concord and Crockett Zip Codes
Camino Tassajara 94506Castle Hill 94507
Castle Hill 94595
Clayton 94517
Clayton 94521
Clyde 94520
Concord 94517
Concord 94518
Concord 94519
Concord 94520
Concord 94521
Concord 94523
Concord 94598
Contra Costa Centre 94597
Contra Costa Centre 94598
Crockett 94525
Danville, Diablo and Discovery Bay Zip Codes
Danville 94506Danville 94507
Danville 94526
Danville 94582
Danville 94583
Diablo 94506
Diablo 94507
Diablo 94528
Discovery Bay 94505
Discovery Bay 94513
East Richmond Heights, El Cerrito and El Sobrante Zip Codes
East Richmond Heights 94803East Richmond Heights 94805
El Cerrito 94530
El Cerrito 94804
El Cerrito 94805
El Sobrante 94564
El Sobrante 94803
Hercules Zip Codes
Hercules 94547Hercules 94553
Hercules 94564
Hercules 94572
Kensington and Knightsen Zip Codes
Kensington 94530Kensington 94707
Kensington 94708
Knightsen 94513
Knightsen 94548
Knightsen 94561
Lafayette Zip Codes
Lafayette 94549Lafayette 94556
Lafayette 94563
Lafayette 94595
Martinez, Montalvin Manor, Moraga and Mountain View Zip Codes
Martinez 94523Martinez 94549
Martinez 94553
Montalvin Manor 94806
Moraga 94549
Moraga 94556
Moraga 94563
Mountain View 94553
Norris Canyon, North Gate and North Richmond Zip Codes
Norris Canyon 94583North Gate 94598
North Richmond 94801
North Richmond 94806
Oakley Zip Codes
Oakley 94509Oakley 94513
Oakley 94531
Oakley 94561
Orinda 94549
Orinda 94553
Orinda 94556
Orinda 94563
Pacheco, Pinole, Pittsburg and Pleasant Hill Zip Codes
Pacheco 94520Pacheco 94553
Pinole 94547
Pinole 94553
Pinole 94564
Pinole 94803
Pinole 94806
Pittsburg 94509
Pittsburg 94520
Pittsburg 94521
Pittsburg 94565
Pleasant Hill 94518
Pleasant Hill 94520
Pleasant Hill 94523
Pleasant Hill 94549
Pleasant Hill 94553
Pleasant Hill 94597
Port Costa 94569
Reliez Valley, Richmond, Rodeo and Rollingwood Zip Codes
Reliez Valley 94523Reliez Valley 94549
Reliez Valley 94553
Reliez Valley 94597
Richmond 94530
Richmond 94553
Richmond 94801
Richmond 94803
Richmond 94804
Richmond 94805
Richmond 94806
Rodeo 94525
Rodeo 94553
Rodeo 94572
Rollingwood 94806
San Miguel, San Pablo and San Ramon Zip Codes
San Miguel 94596San Pablo 94801
San Pablo 94803
San Pablo 94805
San Pablo 94806
San Ramon 94506
San Ramon 94526
San Ramon 94582
San Ramon 94583
Saranap 94549
Saranap 94595
Shell Ridge 94598
Tara Hills Zip Codes
Tara Hills 94564Tara Hills 94806
Vine Hill Zip Codes
Vine Hill 94553Walnut Creek Zip Codes
Walnut Creek 94507Walnut Creek 94518
Walnut Creek 94521
Walnut Creek 94549
Walnut Creek 94595
Walnut Creek 94596
Walnut Creek 94597
Walnut Creek 94598
Code Contra Costa County Zip Codes
9450594506
94507
94509
94513
94514
94517
94520
94521
94523
94525
94526
94530
94531
94546
94547
94549
94551
94553
94556
94561
94563
94564
94565
94569
94572
94582
94583
94585
94595
94596
94597
94598
94611
94708
94803
94806
95206
95219
Contra Costa Post Offices
- Antioch: Antioch Main Office - 2730 W Tregallas Rd, 94509
- Bethel Island: Bethel Island Main Office - 6444 Bethel Island St, 94511
- Bethel Island: Bethel Island Main Office Site - 6444 Bethel Island Rd, 94511
- Brentwood: Brentwood Main Office - 18 Oak St, 94513
- Byron: Byron Main Office - 3852 Main St, 94514
- Byron: Discovery Bay Station - 3345 Bixler Rd, 94505
- Concord: Concord Main Office - 2121 Meridian Park Blvd, 94520
- Crockett: Crockett Main Office - 695 Pomona St, 94525
- Danville: Danville Main Office - 2605 Camino Tassajara, 94526
- Danville: Danville Main Office Addl Land - Camino Tassajara, 94526
- El Sobrante: Richmond El Sobrante Branch - 535 Appian Way, 94803
- Lafayette: Lafayette Main Office - 3641 Mt Diablo Blvd, 94549
- Lafayette: Lafayette Carrier Annex - 3426 Mt Diablo Blvd, 94549
- Martinez: Martinez Court Street Station - 815 Court St, 94553
- Oakley: Oakley Main Office - 400 Del Antico Ave, 94561
- Oakley: Oakley Main Office NCO - 400 Del Antico Ave, 94561
- Pittsburg: Pittsburg Main Office - 835 Railroad Ave, 94565
- Richmond: Richmond Main Office - 1025 Nevin Ave, 94801
- Richmond: Richmond McVittie DDU - 2100 Chanslor Ave, 94804
- San Pablo: Richmond San Pablo Br Trailer - 2080 23rd St, 94806
- San Pablo: Hilltop Carrier Annex - 4180 Lakeside Dr, 94806
- Rodeo: Rodeo Main Office - 499 Parker Ave, 94572
- San Ramon: San Ramon Main Office - 12935 Alcosta Blvd, 94583