A postal code is a number that uniquely identifies a location. It helps with address validation and geocoding. It can also be useful for identity verification and credit card fraud prevention. For this reason, postal codes are an important part of a consumer's address. The code appears at the beginning or end of an address depending on the location.
A postal code was traditionally a five-digit number but has since been increased to nine to improve mail sorting. These numbers also help postal departments and courier companies identify the correct location of an address. Many countries have adopted the postal code system as a means to increase mail delivery. It is an easy way to categorize a location and ensure that the right package arrives at the right place.
However, postal code addresses aren't perfect. There are many reasons why postal codes may not be accurate. First, address codes can contain invalid data. Invalid data can cause flawed analysis and may even lead to legal, financial, and operational risks. Therefore, it's important for businesses to make sure that their data is accurate.
Another reason that a postal code might be inaccurate is that USPS doesn't always use the name of the city where the address is located. They assign cities to ZIP codes, and the city is usually the name of the city's main post office. For example, almost all ZIP codes in St. Louis County, Missouri, have Saint Louis as their city name. However, in other areas, it might be a smaller city with a different name.
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