Lancaster Post Office

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 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
0.8 mile away

567 W Lancaster Blvd
1.3 miles away

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

2220 E Palmdale Blvd
5.0 miles away


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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).