The Postal Service of the United States of America (USPS) is a branch independent from the government of the United States of America, which in 1971 was as "system independent from the executive branch," was established and responsible for providing postal service in the United States of America. This agency is one of the few government agency that expressly by the Constitution of the United States authorized is declared. In the United States, the agency previously as the "post office" or "U.S. mail" was called. Nowadays, as the "Postal Service" for folk, and to officially as "the United States Postal Service", it will be remembered.

USPS for the first time by Benjamin Franklin in Philadelphia in 1775, with orders from the Second Continental Congress was established. The Ministry of the post office from the performance of Franklin in 1792 as part of the Cabinet, the United States was created and then to its current form in 1971 under a law regulating the re-mailing became.

of time re-organizing it into a independent organization, etc. USPS to organizational self-sufficient has become from the early 1980 directly tax taxpayers, except financial assistance much longer for the costs associated with and cross-border, etc. doesn't get. However, now, from the treasury of the United States of America borrow money to pay off the deficit, the budget pays. Reduce the volume of posts, due to the increased use of email, the Postal Service will get that while the cost flared to maintain financial balance reduces to other sources of income.

the company employs 596،000 employees and having over 218 in. 000 vehicles., the second largest company in the United States (after Wal-Mart) for having the largest number of employees and the largest fleet of vehicles, civilians in the world. USPS is obliged to provide rates and quality identical regardless of the geographical location for all citizens of the United States of America. Company access unique to the mailboxes is for "U.S. mail" is specified, and delivery services, private, closed, competition, does that package in the mailbox, don't put just in front of the door, if someone's home is not affected by it.