Encinal Post Office

526 W Fremont Ave, Sunnyvale, CA 94087

Contact Numbers

Phone: 408-245-1783
Fax: 408-245-2806
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Lobby Hours
PO Box Access Available

Monday 6:00am - 6:00pm
Tuesday 6:00am - 6:00pm
Wednesday 6:00am - 6:00pm
Thursday 6:00am - 6:00pm
Friday 6:00am - 6:00pm
Saturday 6:00am - 6:00pm
Sunday 10:00am - 3:00pm

Last Collection Times

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 4:00pm
Sunday Closed

*This facility does not process US Passports applications or renewals. Check nearby locations below.

  • Business Line
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Lot Parking

Visit our Links Page for Holiday Schedule, Change of Address, Hold Mail/Stop Delivery, PO Box rentals and fees, and Available Jobs.

*Please call to verify information. Is anything incorrect? Let us know here

Nearby Post Offices:

Plaza Sunnyvale
510 E El Camino Real Ste C
0.5 mile away

21701 Stevens Creek Blvd
1.4 miles away

Loyola Corners
1525 Miramonte Ave
2.1 miles away

Mission Santa Clara
1050 Kiely Blvd
2.3 miles away


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This info is completely out of date. And didn’t reflect the reality of what is happening with the post offices


They continue to be closed, both Mon and Tues of this week, neither of which are holidays. They list their hours as M-F 930-5pm, and they have my mail from my hold, including my car registration. It is madness.


On Sunday 12/11/2022, I went to this post office at 10am. It was supposed to open from 10-3pm for lobby area PO Boxes but it was locked. I waited for 45 minutes and finally gave up. So many people dropped by too but eventually gave up. There was no note and the hour sign that use to hang on the lobby door was removed. Is this place going to shut down? How am I to get my mail/packages? Can I get a refund on my 6-month payment for PO Box? I called this post office and no one ever picks up the phone. Does anyone know what is going on? Who can I call or talk to?


Poor pick up and delivery to our block on S. Mary Ave. Lately, our delivery service has been poor, at best. Today I received the mail for my next two neighbors. Delivery person didn't even stop at their houses to pick up outgoing mail like he couldn't be bothered. We sent out 2 letters over a week ago that haven't reached their destinations. We do not want this delivery person on our route any longer as this is an ongoing issue. The Hunt's @ 1473 South Mary Avenue, Sunnyvale CA. 94087

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