Post Offices

Post Offices in & near Union City, California. Operating hours, locations, phone/fax number, services information.

Alvarad Post Office

Alvarado Post Office in Union City, California on Smith St. Operating hours, phone number, services information, and other locations.

Address: 3861 Smith St, Union City, CA 94587
Phone: 510-471-1180
Fax: 510-471-0306
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Retail Hours

Monday 9:30am - 4:30pm
Tuesday 9:30am - 4:30pm
Wednesday 9:30am - 4:30pm
Thursday 9:30am - 4:30pm
Friday 9:30am - 4:30pm
Saturday Closed
Sunday Closed

Lobby Hours

Monday 9:30am - 4:30pm
Tuesday 9:30am - 4:30pm
Wednesday 9:30am - 4:30pm
Thursday 9:30am - 4:30pm
Friday 9:30am - 4:30pm
Saturday Closed
Sunday Closed

Last Collection Times

Monday 4:00pm
Tuesday 4:00pm
Wednesday 4:00pm
Thursday 4:00pm
Friday 4:00pm
Saturday 4:00pm
Sunday Closed
Alvarad Post Office
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Union City Post Office

Address: 33170 Alvarado Niles Rd, Union City, CA 94587
Phone: 510-471-1180
Fax: 510-471-0306
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Union City Post Office
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Mount Eden Post Office

Address: 2163 Aldengate Way, Hayward, CA 94545
Phone: 510-782-5636
Fax: 510-783-0460
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Mount Eden Post Office
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Hayward Post Office

Address: 24438 Santa Clara St, Hayward, CA 94544
Phone: 510-783-5963
Fax: 510-783-0460
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Hayward Post Office
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Fremon Post Office

Address: 37010 Dusterberry Way, Fremont, CA 94536
Phone: 510-792-0282
Fax: 510-792-5437
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Fremon Post Office
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Bradford Post Office

Address: 822 C St, Hayward, CA 94541
Phone: 510-783-5963
Fax: 510-783-0460
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Bradford Post Office
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Newark Post Office

Address: 6655 Clark Ave, Newark, CA 94560
Phone: 510-797-0903
Fax: 510-797-9315
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Newark Post Office
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Nil Post Office

Address: 160 J St, Fremont, CA 94536
Phone: 510-793-0291
Fax: 510-792-5437
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Nil Post Office
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San Lorenz Post Office

Address: 15808 Hesperian Blvd, San Lorenzo, CA 94580
Phone: 510-317-1104
Fax: 510-317-1103
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

San Lorenz Post Office
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Castro Valley Post Office

Address: 20283 Santa Maria Ave, Castro Valley, CA 94546
Phone: 510-581-0159
Fax: 510-581-4074
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Castro Valley Post Office
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Washington Manor Post Office

Address: 921 Manor Blvd, San Leandro, CA 94579
Phone: 510-351-5729
Fax: 510-614-8183
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Washington Manor Post Office
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