Castaic Post Office

28201 Franklin Pkwy, Santa Clarita, CA 91383

Contact Numbers

Phone: 661-775-7166
Fax: 661-775-7199
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 1:00pm
Sunday Closed

Passport Appointment Hours*

Monday Closed
Tuesday 10:00am - 6:00pm
Wednesday 10:00am - 6:00pm
Thursday 10:00am - 6:00pm
Friday 10:00am - 6:00pm
Saturday 10:00am - 5:00pm
Sunday Closed

  • Visit our Passport FAQ page for a complete overview of what to bring, what you need to know, and how long it will take.
  • You will need two forms of Identification with copies.
  • A passport quality photo. Available at location.
  • The appropriate application form printed and filled out, and the required fee for applying or renewing.
  • You can find up to date costs, information, and forms at the State Departments Travel Site

*An appointment is required to apply for or renew US Passports. Please Call or schedule online.

  • Burial Flags
  • 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
  • Passport Acceptance
  • Passport Photo
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Lot Parking
  • Passport Appointment Hours

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:

Santa Clarita
24355 Creekside Rd
2.8 miles away

25842 1/2 Tournament Rd
3.3 miles away

23742 Lyons Ave
3.9 miles away

24201 the Old Rd
4.4 miles away


*Comments below are not read by postal employees. Please do not post personal information.

*By clicking Submit, you agree to our Privacy Policy & Terms of Use.


Can we schedule an appointment to request a passport or is it on a first come first serve basis?


This passport branch is unbelievable! I expected to be here for hours and I was done in 30 mins. Greeted by Mark, told to take a number, he saw that I did not fill out the correct paperwork that I printed at home. He gave me the new papers. When my number was called, Mark was the employee that I went to. He thought my face on the passport photo was hidden by eyebrow so retook picture. Expedited delivery both ways. Had me double check photo, items, signature. Clearly knowledgeable about the process. I was nervous because leave in 4 wks with son as a chaperone for the school. Everything needs to be perfect. He smiled, was courteous. This place is awesome!! You can tell the personnel like/ appreciate their job!

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