What Is The Mailing Country Code For The United States? 

The United States is the largest nation in the world with over 50 states and a number of territories. People from all over the world are able to send letters, postcards, or packages to their loved ones and friends. However, these items are not always delivered to their intended recipients and may be sent to the wrong address. 

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There are many ways to deliver your mail, but one of the most common methods is by using a postal code. This information enables the mail to be tracked and ensures that the correct mail is delivered to the right person. 

A Postal Code is a unique identifying number used for addressing and tracking mail across the globe. In the United States, a Postal Code is also called a ZIP Code. The postal code for the United States is a five-digit number, starting with 00501 (Holtsville, Suffolk County, New York) and going up to 99950 (Ketchikan, Ketchikan Gateway County, Alaska). 

Some countries also have alphanumerical codes that are used in their postcodes. For example, the first part of a Wimbledon postcode is SW19. The SW19 stands for South West London. 

ISO 3166 Country Codes

The International Postal Union (UPU) recommends that postal administrations in the world use the numeric country codes of ISO 3166 when addressing their international mail. These codes are used in conjunction with the names of individual countries, dependent territories, special areas of geographical interest, and their principal subdivisions. 

The United States uses the ISO 3166 numeric codes, which are a standardized set of two-letter codes. This allows for a standardized code for each country. It is important to know which codes to use, and the USPS has a comprehensive list of International country codes for reference.