Rossmoor Post Office

1922 Tice Valley Blvd, Walnut Creek, CA 94595

Contact Numbers

Phone: 925-947-0195
Fax: 925-930-0445
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Lobby Hours
PO Box Access Available

Monday 24 hours
Tuesday 24 hours
Wednesday 24 hours
Thursday 24 hours
Friday 24 hours
Saturday 24 hours
Sunday 24 hours

Last Collection Times

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

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

  • Business Line
  • Packaged Stamps
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Street 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:

Walnut Creek
2070 N Broadway
1.3 miles away

Lafayette Carrier Annex
3426 Mt Diablo Blvd
1.7 miles away

160 Alamo Plz
1.8 miles away

3641 Mt Diablo Blvd
2.2 miles away


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I have observed on 2 occasions 4/24 and 5/12 postal employees not wearing masks with customers


We have had an address change order for 6 months and mail is still being delivered to our old address. This has caused many problems such as lost checks, past due fees, missed birth announcements and lost Christmas cards. In addition one member of our family has had their identity stolen.
The USPS has failed us BIG TIME.

* is not a part of, or affiliated with, the official United States Postal Service (USPS).