Irvington Post Office

41041 Trimboli Way, Fremont, CA 94538

Contact Numbers

Phone: 510-651-0233
Fax: 510-651-8279
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

Monday 5:00am - 7:00pm
Tuesday 5:00am - 7:00pm
Wednesday 5:00am - 7:00pm
Thursday 5:00am - 7:00pm
Friday 5:00am - 7:00pm
Saturday 5:00am - 7:00pm
Sunday Closed

Last Collection Times

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

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

  • Business Line
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • 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:

Fremont Detached Del Unit
4260 Business Center Dr
1.2 miles away

Mission San Jose
43456 Ellsworth St
1.6 miles away

160 J St
1.9 miles away

Warm Springs
240 Francisco Ln
2.2 miles away


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I live on Marietta drive in fremont. Our regular mailman is EXTREMELY SLOW in delivering mail in this neighborhood. I’ve observed hike being on his phone the majority of the day. The guy is extremely slow when he drives when he walks etc. I’ve witnessed him deliver mail 2 houses down from where I live. After he puts the mail in the mailbox he then sits in his truck for about 5 to 10 minutes and he’s looking at his phone the whole time. THEN he proceeds to deliver mail to my house. Once he’s in front of my house he still sits in his truck another 3, 4 minutes before he gets out. He’s looking at his phone as he’s putting mail in my mailbox. This goes on every single day. I’m getting tired of it. If u add up the time he’s looking at his phone we could be getting our may a few hours earlier every day. Instead of 5, 6, 7, at night. Please do something about this SOON!!!!!


Where is my mail person ?


In Irvington district, my mail is not getting picked up from the box in front of my house. This is a ongoing problem. The phone number sends me on a run around with links. The brick and mortar location is not answering their phone.


I was just wondering why twice within a month July/August the post office lobby was not open at 5:40 a.m.

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