List of US Post Office Stores in Lancaster, CA Outlet Note Regular Brands US Post Office California Lancaster Rating 4.5 based on 76 votes Official Website https://www.usps.com/ Products Postal Service NameAddressPhone Name/Address/Phone US Post Office outlet - Lancaster 567 W Lancaster Blvd (661) 948-7151 US Post Office outlet - Lancaster 42103 50th St W (661) 943-4752 US Post Office outlet - Lancaster 1008 W Avenue J2 (661) 948-7251 People Also Viewed