USPS Is Enhancing Service Standards

New tools and fact sheet offered to help customers determine expected delivery times

• Refinements will occur in two phases: April 1 and July 1
• Refinements estimated to save USPS at least $36 billion over 10 years

WASHINGTON, March 20, 2025 /PRNewswire/ -- The United States Postal Service is implementing refinements to service standards and has launched new online tools and a fact sheet to help customers prepare for the changes. These adjustments will affect First-Class Mail, Periodicals, Marketing Mail, Package Services (including Bound Printed Matter, Media Mail, and Library Mail), USPS Ground Advantage, Priority Mail, and Priority Mail Express.

The enhancements are estimated to save the Postal Service at least $36 billion over the next decade through reductions in transportation, mail and package processing and real estate costs. The service standards refinement will occur in two phases to ensure effective operational implementation: the first phase will begin April 1. The second phase will start July 1.

As part of the ongoing Delivering for America 10-year plan, USPS has already achieved $2.2 billion in annual transportation cost reductions by streamlining networks and optimizing air and surface options. Additionally, it has decreased work hours by 50 million — translating to $2.5 billion in annual savings, by enhancing plant productivity and closing unnecessary facilities. At the same time, the Postal Service has increased revenue by $3.5 billion annually by adapting product offerings amidst significant declines in First-Class Mail volume.

These newly enhanced service standards align with the Postal Service's operational goals and enable the organization to realize the projected savings while also:

• Preserving the current service standard day ranges for First-Class Mail and USPS Ground Advantage, thus ensuring the standard First-Class Mail delivery time will not exceed 5 days.
• Enhancing service predictability and reliability.
• Offering 2-3-day turnaround service within regions and specific local areas.
• Allowing flexibility in regional transportation schedules, which may extend service expectations by one day for mail collected at certain Post Offices, while overall improving delivery speeds for mail and packages between regions.

In preparation for these upcoming changes, USPS has developed user-friendly tools to assist customers in understanding expected delivery times for their mail.

Available now: 

• Detailed file specifications for downloadable files with the new standards are available on PostalPro (Service Standards | PostalPro).
• The service standards Application Programming Interface (API) has been updated to include a new presort indicator for First-Class Mail standards. API specs are available now on the USPS Developer Portal (https://developers.usps.com/)

Starting March 24:

• Customers can look up service standards on usps.com for mailings from one ZIP Code to another on a particular mailing date. The search results will display the available mail classes along with the expected delivery dates for each.
• A new interactive map will be available that will display service standards. Customers will be able to enter the ZIP Code they are mailing from along with the mail class to view the expected delivery time.

For additional information about the service standard changes, please go to:
https://about.usps.com/what/strategic-plans/delivering-for-america/details.htm#fcps
This information will be updated as needed to communicate any new information.

Please Note: The United States Postal Service is an independent federal establishment, mandated to be self-financing and to serve every American community through the affordable, reliable and secure delivery of mail and packages to 169 million addresses six and often seven days a week. Overseen by a bipartisan Board of Governors, the Postal Service is implementing a 10-year transformation plan, Delivering for America, to modernize the postal network, restore long-term financial sustainability, dramatically improve service across all mail and shipping categories, and maintain the organization as one of America's most valued and trusted brands.

The Postal Service generally receives no tax dollars for operating expenses and relies on the sale of postage, products and services to fund its operations.

For USPS media resources, including broadcast-quality video and audio and photo stills, visit the USPS Newsroom. Follow us on X, formerly known as Twitter; Instagram; Pinterest; Threads and LinkedIn. Subscribe to the USPS YouTube Channel and like us on Facebook. For more information about the Postal Service, visit usps.com and facts.usps.com.

Contact: Marti Johnson
[email protected]
usps.com/news

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SOURCE U.S. Postal Service