By: James McAllister


Out of all of the zip codes in the United States, 84198 has to be one of the most mysterious.

So much so in fact, that even many post office employees don’t really know much about it.

Nobody lives there, but so many packages travel through there. Others believe it has ties directly with the IRS.

So, what is this mysterious zip code, and what is it used for?

In this article, we’ll cover everything that you need to know!

What Zip Code Is 84198?

The zip code for 84198 is based in Salt Lake City, Utah. However, this is not a zip code containing addresses of people’s homes.

Instead, the 84198 zip code is the zip code for the main USPS sorting hub inside of Salt Lake City. This is why you may get messages like, ‘arrived at USPS destination facility 84198’ or ‘84198 departed USPS destination facility.”

This is where the confusion comes in – 84198 is not used for residential addresses in Salt Lake City. Instead, the 84198 zip code is reserved specifically for that sorting center. Yes, it has its own zip code!

So, if you’re tracking your package on USPS website and you see that your item has moved through the 84198 zip code, this simply means its arrived at a sorting center to continue the next step on its route.

This is completely normal, and is nothing to worry about.

For more information about how sorting centers work (and why packages sometimes go ‘out of the way’ to get to one, click here.)

Tip: Zip codes are designed to tell a lot about where they’re going. The first two numbers signify the state, so in this case all Utah zip codes start with 84. The third number represents the distribution center it will go to, and the last 2 numbers are the specific delivery area. Many other distribution centers also have their own zip code!

What Are 84198’s Links To The IRS?

USPS Vehicles

Some people believe that the 84198 zip code is unique to the IRS or U.S treasury, and that mail going through 84198 gets delivered directly to the IRS. However, this is not the truth.

This rumor came about due to large volumes of people’s mail to the IRS going to the 84198 sorting hub during the final stages of its shipment.

However, there are plenty of other packages that go through 84198 before being delivered to different states entirely.

So, this is nothing more than a rumor.

What Are 84198’s Ties To Lithuania?

Some people have also seen the 84198 zip code tied to a place in Lithuania. Why is this?

Well, if you Google 84198, Google will show a widget on your screen with a map of Kirnaičiai, Lithuania. This is because 84198 is also the postal code for that city.

Of course, if you’re within the United States or you’re tracking using USPS, you are probably looking for the zip code within the US. Kirnaičiai, Lithuania has less than 300 total residents, so relatively few packages get shipped there.

What Other Zip Codes Are In Salt Lake City?

In case you’re curious, here are some of the other zip codes within Salt Lake City, in addition to 84198!



The 84198 zip code is designated to a specific USPS sorting center, located in Salt Lake City, Utah.

Seeing your package tracking move through this facility does not mean that your package is going to the IRS, nor does it mean it’s somewhere in Lithuania.

I hope that you’ve found this article helpful. if you have any other questions about USPS, please ask them using the comment form below.

Wishing you the best,

– James McAllister

About the author 

James McAllister

James is the owner of He started his first blog at the age of 11, and has since gone on to start several successful businesses. In total, these businesses have sold hundreds of thousands of units and have touched millions of lives. Here on, he shares his knowledge that brought him to where he is today. If you want to connect with James, follow him on your favorite social networks!

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