What Is A Zip Code, And Why Should You Care?

What Is A Zip Code, And Why Should You Care?

While sending a parcel or posting a letter, you must have come across the shipping zip code. Everyone must have used the zip codes while mentioning their addresses. However, not everyone is well aware of the critical aspects of zip code. Some people may not even know what zip code stands for. Therefore, it is vital to know about the basics of zip codes. 

The zip code allows the mail sorters to determine where the letter or package should go quickly. It helps in understanding the exact location of the senders and receivers of the parcel. In this blog post, you will learn about zip code and why you should care about it. 

What is Zip Code?

Zip code is a popular term used for describing a postal code introduced by the United States Postal Services (USPS). ZIP stands for Zonal Improvement Plan. It is a series of numbers that effectively communicates the exact location of an individual. It helps in ensuring that mail is delivered faster. 

Why is Zip Code Important?

Zip code is essential for several reasons. Here are some of the reasons you must care about the zip code. Let’s take a look!

Effective Delivery of Parcels

It is impossible to send a letter or a package to the desired destination with a zip code. Even if you send the box, it will not reach the destination without the zip code. When you add the correct zip codes, your parcels will arrive at their destinations effectively.

Related: What is FedEx Ground Economy (FedEx Smartpost) For Businesses?

Faster and Correct Delivery

Shipping from zip code to zip code helps pinpoint the exact location of the sender and receiver. It ensures that the parcel reaches the correct destination much faster. Moreover, it can help in reducing the chances of mis-deliveries. 

Provides Significant Information

While people consider the zip codes mere numbers, each number carries a significant meaning. The first number indicates a group of states in a five-digit zip code. The second and the third number represent the regional sorting center of the US Postal Service. Finally, the fourth and fifth numbers indicate the Post Office in that region. 

Now you must be wondering, what are the extra four numbers on a zip code? The other four numbers have been introduced to indicate the exact delivery points. 

Related: Compare USPS Priority Mail to Priority Mail Express

Tips and Reminders for Zip Code

Here are specific tips you must remember relating to zip code.

  • Never forget to mention the zip code while sending a parcel.

  • Mention the zip code correctly to avoid parcel delivery to the wrong address.

  • Avoid using invalid zip codes. 


Zip code is vital for the efficient and correct delivery of letters and parcels. Zipcode consists of numbers that have unique meanings and help identify the post office from which the package is sent. Ensure you’re the correct zip code when sending a parcel to ensure successful delivery. 

Recommended: What Are The USPS Shipping Zones?

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