Rancho Penasquitos Post Office

NOTICE: The Postal Service is an essential government service, and will remain open wherever possible.

9245 Twin Trails Dr, San Diego, CA 92129

Contact Numbers

Phone: 858-538-5773
Fax: 858-538-3304
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

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 4:30pm
Sunday Closed

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

  • Business Line
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • Duck Stamps
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • Packaged Stamps
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Sure Money
  • 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:

Mira Mesa
9051 Mira Mesa Blvd
1.6 miles away

Carmel Mountain Postal Store
11251 Rancho Carmel Dr
2.2 miles away

San Diego
11251 Rancho Carmel Dr
2.2 miles away

Scripps Ranch Annex
10060 Willow Creek Rd
2.3 miles away


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Without common curtesy or proper notification the post office not only cleaned up my mail box, returned all of my mail to sender, and to make matters worse, displayed a sticky note in my mailbox that read "vacant" All if not 99.99% of the mail I receive is junk mail, not addressed to me or simply reads "current resident" When I called the only EXCUSE I receive was that it's their policy - Isn't there a policy that restricts them to place mail that is not addressed to me in mail box?????? I'm livid - post office get your priorities in order and most important STOP PUTTING MAIL NOT ADDRESS TO ME IN MY MAILBOX.


Very upset at RUTH LIARELL OR LIATRELL. The package information clearly states that the pink slip was left on the door and to leave the package on the porch. None of which was done, they didn't even bother walking up to the house or checking to see if we were present. How can we sign for a package if no one rings the doorbell or lets us know there's a package. Completely inconvenient and wrong. Her job is as follows, I am a consumer and don't deserve to have this much headache to get a package when the instructions are written clear as day on both packages. Why on earth can they not do their job, this is the second time this has happened. I'm calling corporate and placing a formal complaint on her and on the rancho penasquitos post office.

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