Post Office Corporate Phone Number

In order to contact Post Office Corporate Office (Headquarters), you need to call the following Phone Number: 877-477-3273

If you are trying to get in touch with the United States Postal Service (USPS) corporate office for any reason—whether it’s regarding mail delivery issues, corporate inquiries, customer complaints, employment verification, or general assistance—the official USPS corporate phone number is 877-477-3273. This toll-free number connects you directly to the USPS National Customer Service Center, where representatives can help direct your call to the appropriate department within the USPS corporate structure.

The USPS Headquarters, also known as the Post Office Corporate Office, is responsible for overseeing all national operations of the United States Postal Service, including logistics, human resources, legal affairs, consumer affairs, and service standards. By calling 877-477-3273, you can speak with a customer service agent during USPS business hours and get assistance with matters that cannot be resolved through local post office branches.

Whether you need to escalate a complaint, inquire about a USPS job application, or request support with mail services or delivery concerns, the USPS corporate phone number is your primary point of contact for national-level support.

Post Office Jobs Website

Post Office HR Number

What are Post Office Office Hours? Post Office Office Hours

The official Post Office corporate office hours—referring to the business hours for the United States Postal Service (USPS) Headquarters—are from 9:00 AM to 5:30 PM, Monday through Friday. During these regular office hours, all primary USPS corporate departments are fully operational and available to handle various administrative and customer-related functions.

Departments available during these hours include Finance, Marketing, Sales, Customer Support, Customer Service, Legal, Compliance, Human Resources, and Public Relations. Whether you need assistance with a mail delivery issue, job application, employment verification, consumer complaint, legal correspondence, or service inquiry, these departments are staffed with professionals ready to assist during the designated office times.

It’s important to note that these are corporate office hours—not the same as local post office retail hours, which may vary by branch and location. The corporate office manages high-level operations, policy enforcement, and national service concerns for the entire USPS system, and these teams are only available for direct contact during business hours.

To ensure timely assistance and shorter wait times, it is recommended to contact the USPS corporate office earlier in the day, ideally between 9:00 AM and 11:00 AM Eastern Time.

When Was Post Office Founded?

The United States Postal Service (USPS)—commonly referred to as the Post Office—was officially established as an independent agency of the U.S. federal government in 1971, following the Postal Reorganization Act. Prior to its establishment in its current form, the U.S. postal system had operated as a cabinet-level department known as the Post Office Department, which dates back to 1775 with Benjamin Franklin serving as the first Postmaster General.

Today, the USPS is headquartered in Washington, D.C. (District of Columbia) and serves as one of the largest employers in the United States government. The Post Office currently operates with a workforce of over 510,000 employees nationwide, managing everything from mail delivery logistics and retail postal services to corporate operations, customer service, technology, and regulatory compliance. These employees work in thousands of local branches as well as regional and national offices throughout the country.

The United States Postal Service plays a critical role in maintaining reliable and universal mail delivery service across the nation. It continues to adapt with advancements in logistics, technology, and digital communications, while still remaining rooted in its mission of serving every residential and business address in the country, regardless of geography.

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