United States Postal Service

The United States Postal Service (USPS) is the nation's primary provider of mail and package delivery, handling letters, flats, periodicals, and parcels for domestic and international destinations. It operates under a universal service obligation that requires it to deliver to every address in the country, regardless of location, at uniform rates. The organization offers a range of products including First‑Class Mail, Priority Mail, Express Mail, and various shipping solutions for businesses and consumers. Through its network of post offices, processing centers, and delivery routes, USPS connects individuals and enterprises across the United States.

As an agency of the federal government, USPS is tasked with maintaining the nation's postal infrastructure, which includes one of the largest civilian vehicle fleets and numerous sorting facilities that process mail year‑round. While specific throughput figures are not provided in the source material, the service is known to handle a substantial volume of correspondence and shipments on a daily basis. Its presence extends to every state and territory, ensuring that rural and urban communities alike have access to mail services. The organization also collaborates with other federal entities on security and emergency communications initiatives.

USPS is structured as an independent establishment of the executive branch, overseen by a Board of Governors and the Postmaster General, and does not have a private parent or subsidiary structure. Its distinguishing attributes include the mandate to provide universal service, its role as a key component of the nation's communications infrastructure, and its responsibility for safeguarding the confidentiality of mail under federal law. The agency has faced notable cyber incidents, such as the 2014 intrusion attributed to suspected state‑sponsored actors and the 2023 breach that exposed employee banking information in specific regions. These events underscore the ongoing challenges USPS encounters in protecting its information technology systems while fulfilling its public service mission.