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Postal Services

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ZIP Codes-Postage Rates
Locations & Hours-Change Of Address
Redelivery-Vacation Hold Mail-Services
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Express Mail Tracking-International : Inquiries & Claims Status-Signature
& Delivery Confirmation
800-222-1811

TTY For Speech & Hearing : Impaired
877-889-2457

Stamps By Phone : 800-782-6724

US Postal Inspectors : 877-876-2455

Post Offices : Alamo Post Office
160 Alamo Plaza ,
Alamo 94507 925-935-9953

Antioch Post Office : 2730 W Tregallas Rd ,
Antioch 94509 925-757-0379

Bethel Island Post Office : 6444 Bethel Island Rd ,
BethelIsland 94511 925-684-2561

Brentwood Post Office : 18 Oak ,
Brentwood 94513 925-240-2065

Byron Post Office : 3852 Main ,
Byron 94514 925-634-2600

Canyon Post Office : 99 Pinehurst Rd ,
Canyon 94516 925-376-5600

Clayton Post Office : 6150 Center ,
Clayton 94517 925-672-4337

Concord : 2121 Meridian Pk Bl ,
Concord 94520 925-687-0533

Danville : Main Post Office
2605 Camino Tassajara ,
Danville 94526 925-736-0775

Retail Store : 23 Railroad Av ,
Danville 94526 925-314-9650

Diablo Post Office : 1701 El Nido ,
Diablo 94528 925-837-3800

Dublin Post Office : 6937 Village Pkwy ,
Dublin 94568 925-828-2689

Knightsen Post Office : 3109 Knightsen Av ,
Knightsen 94548 925-625-2724

Lafayette : Main Post Office
3641 Mt Diablo Bl ,
Lafayette 94549 925-283-8229

Carrier Annex : 3426 Mt Diablo Bl ,
Lafayette 94549 925-962-6955

Martinez : Main Post Office
4100 Alhambra Av ,
Martinez 94553 925-228-2722

Court Station Post Office : 815 Court ,
Martinez 94553 925-229-4795

Pacheco Post Office : 4980 Pacheco Bl ,
Martinez 94553 925-228-2722

Moraga : Main Post Office
460 Center ,
Moraga 94556 925-376-9012

Saint Mary's Post Office : 1928 Saint Marys ,
Moraga 94556 925-376-0739

Orinda Post Office : 29 Orinda Wy ,
Orinda 94563 925-254-6240

Pleasant Hill Post Office : 1945 Contra Costa Bl ,
PleasantHill 94523 925-609-8063

Walnut Creek : Main Post Office
2070 N Broadway ,
WalnutCreek 94596 925-935-0256

Rossmoor Post Office : 1221 Rossmoor Pkwy ,
WalnutCreek 94595 925-933-4118

Tice Valley Post Office : 1922 Tice Valley Bl ,
WalnutCreek 94595 925-947-0195

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