Alamo Post Office

423 Los Alamos Dr, Alamo, TX 78516

Contact Numbers

Phone: 956-787-4514
Fax: 956-783-0920
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 Closed
Sunday 24 hours

Last Collection Times

Monday 4:30pm
Tuesday 4:30pm
Wednesday 4:30pm
Thursday 4:30pm
Friday 4:30pm
Saturday 3:00pm
Sunday Closed

Bulk Mail Acceptance Hours

Monday 10:00am - 3:00pm
Tuesday 10:00am - 3:00pm
Wednesday 10:00am - 3:00pm
Thursday 10:00am - 3:00pm
Friday 10:00am - 3:00pm
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
  • Duck Stamps
  • General Delivery
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • 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:

San Juan
100 W Amy Dr
2.0 miles away

509 N Salinas Blvd
2.7 miles away

301 W Park Ave
3.2 miles away

Po Box Locker
4.3 miles away


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Was suppose to receive a package Monday and it said out for delivery yet it didn't get delivered and the 2 delivery guys were parked at the mail box in front of my house for 20 minutes talking laughing having a good time yet they couldn't deliver my package that they had in their van.. They took it back to the post office and now says available for pick up. Pardon my french but that's bullshit


Very rude! Could not give me my package 1 min after closing, even though I had already been there two times! Slammed the door like if I was go rob them when I’m clearly don’t have the size to scare anyone! So rude!


Good morning, mailman Homer car#3308218 delivering from San Juan, TX, greet to me & tell me my & neighbors mail box were too low & That's the reason why he doesn't closed them, regardless ob the weather. He asked if I noticed & I said yes Sir especially when my & neighbors mail is flying on the ground. But I did tell him 3yrs ago I received a map & got fixed, but he said he was given a taller car & can't reach down that he has too many deliveries & can only do so much. I called to question the height requirements I was told from ground 41in to 45in, my mail drawer is at 43in. It is a long pole & it's deep I will try my best to pick it up for my mailman, we send & recive letters from our soilder and are very important as well our bills & medical insurance, etc. I hope mailman Homer doesn't take it personal, but I do expect as better service.

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