Port Isabel Post Office

103 N Manautou St, Port Isabel, TX 78578

Contact Numbers

Phone: 956-943-2212
Fax: 956-943-2640
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 4:45pm
Tuesday 4:45pm
Wednesday 4:45pm
Thursday 4:45pm
Friday 4:45pm
Saturday 1:00pm
Sunday Closed

Bulk Mail Acceptance Hours

Monday 8:30am - 2:00pm
Tuesday 8:30am - 2:00pm
Wednesday 8:30am - 2:00pm
Thursday 8:30am - 2:00pm
Friday 8:30am - 2:00pm
Saturday Closed
Sunday Closed

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

  • Bulk Mail Acceptance
  • Bulk Mail Account Balance
  • Bulk Mail New Permit
  • Burial Flags
  • Business Line
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • General Delivery
  • 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:

South Padre Island
4701 Padre Blvd
2.3 miles away

Los Fresnos
301 W Ocean Blvd
10.9 miles away

1535 E Los Ebanos Blvd
13.0 miles away

7955 N Expressway 77
13.2 miles away


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the mail isn't delivered on some weekdays and the local post office must take their phone off hook when they come to work. and hang it up on their way home. they have never answered the phone.


Incompetent is the only word good enough for the Cameron County USPS, including South Padre Island and Port Isabel mail service. When a government document (1099R) is shown on the online mail to be delivered along with three other advertisement letters of no consequence and only the junk mail is in our box, it's very strange that the gov. doc. is the only one not delivered........Today is the last day to file taxes and my wife can not file due to her not receiving her documents......now she must request for an extension and ask again for the third time for her 1099R plus late fees from the IRS on the extension......plus my 1099R copies, mailed 4/4/22 have yet to even make it to the Informed Delivery notices. South Padre Island, Port Isabel and Laguna Vista deserve better,


Worst Post office that I have encountered in my life. I am 73 years old, and have been over much of the world, lived in Texas, Colorado, Michigan, New Mexico, Alabama, Vietnam, Canada. The Post master in Port Isabel is an ass.


I've been waiting for a very important piece of mail. It was said to be sent June 1st. Still not delivered. Please help me understand the delay.


Port Isabel TX post Office Phone number is busy all of the time.


I that my mail transferred to Port Isabel post office Jan.29, as of Feb 24 I haven't received 1 piece of mail. My phone bill has already been return to sender. I would like to know who is dropping the ball at your office.

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