postalcode（美国的zipcode是多少）

Postal Code in the United States: What is Zipcode? Postal codes are essential codes used in mailing services to identify a specific area for mail delivery. In the United States, the unique postal code used to sort and deliver mail is known as the Zipcode. The Zipcode system was established by the United States Postal Service (USPS) in 1963 to improve mail delivery efficiency. In this article, we will explain what Zipcodes are, their functions, and how to use them. What are Zipcodes? Zipcode or Zone Improvement Plan Code is a system of codes used by USPS to identify areas for mailing purposes. Zipcodes are composed of five or nine digits that indicate a specific area in the United States. The first digit of the Zipcode identifies the region, while the second and third digits represent the sectional center facility (i.e., sorting and processing centers). The last two digits identify small, specific post offices or delivery points. What is the Function of Zipcodes? The primary function of Zipcodes is to improve mail delivery efficiency. By assigning each area a unique code, USPS can quickly sort and deliver mail to the correct location. Zipcodes also help in identifying areas for marketing purposes and for generating accurate statistics of mail volume in a region. In addition, Zipcodes are used in other sectors like insurance, finance, and social research. Using Zipcodes When mailing a letter or package, one must know the correct Zipcode for the delivery location. Several ways you can search for the correct Zipcode, including: 1. Online: USPS website provides a Zipcode search option that allows you to search using an address, city, or ZIP code. 2. Post Office: Visiting a local post office and asking for Zipcode information can help you locate the correct zipcode. 3. Phone: Customers can call USPS customer service number to get information about the right Zipcode for mailing their items. Conclusion Zipcodes play a critical role in ensuring that mail is delivered accurately and efficiently. By using Zipcodes, USPS can sort and deliver mail promptly, and this has contributed significantly to the success of the US postal service. Therefore, it is essential to understand how to use Zipcodes correctly to ensure that your mail is delivered on time.