Lancaster Post Office

Offices closed November 26th in observance of Thanksgiving Day

43824 20th St W, Lancaster, CA 93534

Contact Numbers

Phone: 661-948-7251
Fax: 661-945-5163
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 3:00pm
Sunday Closed

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

  • 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
  • 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:

Lancaster Carrier Annex
1008 W Avenue J2
0.7 mile away

567 W Lancaster Blvd
1.3 miles away

Palmdale Carrier Annex
38917 20th St E Ste 701g
4.5 miles away

2220 E Palmdale Blvd
5.1 miles away


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Hello. On saturday 8/29 I received an email saying that a package I was expecting was not able to be delivered. As of today 8/31 I have still not received package. I have ordered this package twice before ande had no problem. Also, on 8/30 I received a notice from Amazon telling me that another product that I ordered had been left in my mail box but it was not there.


The lobby at the 20th St West facility is no longer open 24 hrs. I was there at 10pm last night and the doors were locked. They've probably had too many problems with the homeless using it as a hotel room.


The tracking facility of USPS shows that up to now (6/15/20), the Certified Mail , #70200090000100892921 sent on June 6th/20 from Lancaster 93534 to be delivered also to Lancaster 93535, is still IN TRANSIT (about 10 days ago). Please check. asap. Thanks.


Good evening I wanted to know if change of address form is in the lobby or at the counter with requests thank you for your quick response


I have recently not received two deliveries that were tracked to have been delivered to my mailbox. I called the post office on this last one and it was not resolved. Was supposed to get a call back after reaching to the mail carrier but no call. I also constantly get other people’s mail. Extremely frustrating!


I am aware it is the Christmas rush. I have called several numbers which rang and rang (no one answered) why have a phone. I am trying to find my package you report was delivered NOT. I guess I have to go in person to the post office to find out anything. So my question again why have a phone or a web site.


Despite my submitting a package pickup request a day in advance, my priority mail was not picked up on the 17th of July 2018. Don't they inform substitutes if the regular carrier is off for the day?


every time you ( usps ) deliver to my door your employee crosses my lawn and breaks off one of my sprinkler heads ( 5th time) I am tired of replacing it .I even have it sticking up so he / she can see it still no use its broken again. please help ( Lancaster ca. )


I sent four packages to NV, they all get there in reasonable time. One has been in Ca. since the 3rd, its been at the Lancaster P.O. since the 9th. They can't tell me why its not moving except blaming it on ground shipping or the truck, which comes back to the one package, there is no reason it should be just sitting. The P.O won't answer their phone, they let it ring then pick it up and hang up, so unprofessional. I'll never ship packages again with USPS, just can't them to get the job done in decent time. $72. to ship four medium to small packages and i just get lame excuses.


Why is the post office closed and my package not being brought to my father's home. This is so unacceptable. USPS 9505515244587115098121, Business Closed 04/28/2017 3:43pm LANCASTER CA 93534 Reply HELP 4 help-STOP to cancel THE PACKAGE IS JUST SITTING IN THE DARN POST OFFICE

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