United States Postal Service

The United States Postal Service (USPS) is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the United States, including its insular areas and associated states. It is one of the few government agencies explicitly authorized by the United States Constitution. The USPS provides mail and package delivery services, as well as money orders and other related services. With nearly 650,000 employees, it operates one of the largest civilian vehicle fleets in the world.