Southside Post Office

16731 Santa Ana Ave, Fontana, CA 92337

Contact Numbers

Phone: 909-350-3466
Fax: 909-350-3855
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours







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 - 4:00pm
Sunday Closed

Last Collection Times

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 3:00pm
Sunday Closed

Passport Appointment Hours*

Monday 9:00am - 12:00pm, 1:00pm - 3:00pm
Tuesday 9:00am - 12:00pm, 1:00pm - 3:00pm
Wednesday 9:00am - 12:00pm, 1:00pm - 3:00pm
Thursday 9:00am - 12:00pm, 1:00pm - 3:00pm
Friday 9:00am - 12:00pm, 1:00pm - 3:00pm
Saturday 9:00am - 2:00pm
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
  • General Delivery
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • Passport Acceptance
  • Passport Photo
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Sure Money
  • 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:

Bloomington
10191 Linden Ave
1.7 miles away

Fontana
8282 Sierra Ave
1.9 miles away

Rialto
241 W Rialto Ave
3.2 miles away

Rubidoux
8082 Limonite Ave Ste 1
3.3 miles away

Reviews

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They literally NEVER answer the phone, how is this ok?? The line is always too long…This is a terrible government office, don’t be shocked when USPS becomes obsolete bcz of how it’s allowed to ignore, disregard, and disrespect the citizens they are here to service. My mailbox was vandalized, P.O. said it will take up to 6 mos to repair (whole buildings are built faster than that), and I have to pick my mail up from a P.O. that is only open M-F 10a-5p, I WORK M-F 8a-5p, so guess who can’t get mail for 6 mos or take off work unpaid, yep, this tax paying citizen… Why are they even there at all????? Irked
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what time almost the postman to put letters mail box
4
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THEY NEVER ANSWER just rings or they pick up and then hang up WORST EVER and they wonder why people are rude
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I've called ALL Day and no answer. Ever. It rings forever and then there is a busy signal. Why even have a phone?
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