What is zip code

Definition of the "zip code"
The U.S. Postal Service office created a "zip code" code to identify a particular location, then route mail to that location, and the "zip code" is an abbreviation for "Zone Improvement Plan Code", which when it was established in 1963, helped facilitate the post office's work in classifying and delivering Mail, and the Office succeeded in persuading the public to accept this symbol on a large scale.

The meaning of the numbers of the "zip code"
The "zip code" originally consisted of five digits, with mail users initially asked to include a five-digit code at all their mail addresses, with the first three numbers specifying the section of the country to which the mail will be transferred, while the other two numbers specify the post office, or region. The U.S. Postal Service provided the nine-digit zip code in 1983, which may be one of the original five digits, followed by a short line, followed by four additional numbers, with the first two digits identifying a particular sector, such as A group of streets, or large buildings, the last two digits of this symbol identify a smaller area called a piece or part, which may be a neighborhood of the city, a certain floor in a large building, or a set of mailboxes, and these numbers added helped speed up automated sorting .

History of the "zip code" system
The idea of a "zip code" emerged due to the lack of experienced workers at the U.S. Post Office, who left the country to serve in the army during World War II, so the UsPS established a coding system in 1943, in order to divide the postal distribution areas within the 124 largest cities. In the country, the number of mail and population increased dramatically in the 1960s, and the content of mail varied so that it was no longer limited to personal correspondence, and included commercial mail, such as invoices, advertisements, and magazines, so the post office's need for a better quantity management system increased. the huge number of items that are transmitted by mail every day.

The postal code was first announced to the public on July 1, 1963, and was designed to help better distribute the increased mail in the United States of America, and a postcode was set for each address in the United States at the time, and the use of these postcodes was an order. Optionally, in 1967, the use of zip code became mandatory for most senders, and four digits were added at the end of the zip+4 in 1983.