P.O. Box Cost in 2026: USPS Prices, Sizes & Cheapest Alternatives

In 2020, about 160 million P.O. Boxes were being used in the U.S., functioning under the United States Postal Service (USPS). Every year, this number goes up by about a million or more. Hence, it is evident that more and more people and businesses need P.O. Boxes. If you are thinking about getting a P.O. Box too, it’s important to know how much does a P.O. Box cost before you sign up.

When you try to find out how much does a P.O. Box cost, you’ll see that there isn’t one fixed price. The cost depends on things like the size of the box, where it is located, and how long you rent it for. 

In this blog, we will explain how USPS P.O. Box prices work. Also, we will expand on the P.O. box cost. Thus, you can decide which P.O. Box size and location is right for you. Furthermore, we will also look at other options besides P.O. Boxes and compare their prices. Let us dive in!

Key Takeaways

• A P.O. Box is a private mailbox that individuals and businesses can rent at a post office. 
• It gives you a dedicated P.O. Box or street address (for an additional fee) to receive your postal mail and packages.
• The P.O. Box cost depends on many factors, like the P.O. Box size, location, and other services.
• You can look into P.O. Box alternatives, including virtual mailboxes and UPS Store Mailboxes.

A P.O. Box or a post office box is a small locked box inside a post office building. You get a box with a dedicated address. And your mail and packages are sent there instead of to your home. It keeps business mail separate from personal mail. Knowing the USPS P.O. Box cost can help you make the right choice.

The box is usually placed in the lobby or along a wall inside the post office. Many post offices let you check your P.O. Box at any time, day or night, every day of the week. But the hours can be different depending on the location.

If you rent a mailbox for your business by paying the P.O. Box cost, you get a unique number for sending and receiving mail. When someone sends you something, it goes to your P.O. Box. You can pick it up using the key or the combination that the post office gives you.

More Things to Know About USPS P.O. Boxes

1. When you set up your box, you can sign up to get alerts when packages arrive and use phone or text services to check your mail.
2. If you cancel your P.O. Box, USPS lets you change your mailing address.
3. Some post offices will not accept packages from FedEx or UPS. But if your box qualifies for special services, they can hold packages from any delivery company.
4. If your business is an LLC or a corporation, you cannot use a P.O. Box as the main address on your business license or tax forms. You must use a real physical business address.
5. If you don’t want to go to the post office in person, you can create a USPS account and renew your P.O. Box online using a credit or debit card. You can do this on the “Manage P.O. Box” page.

Enhanced Security for Postal Packages

Package theft is a growing problem. A P.O. Box keeps your mail and packages safe until you pick them up. Paying a little extra can save you from losing money or dealing with stolen items. But remember, this only works if you check your box regularly. If your box gets too full, mail could be turned away or at risk. Thus, it could cause problems for your business.

Separate Personal and Commercial Incoming Mail

Knowing how much does a P.O. Box cost helps you rent one that suits your needs. A P.O. Box helps keep your business mail separate from your personal mail. Using your home address for business is usually not a good idea. So a P.O. Box can protect your privacy. But keep in mind, having mail at a different location means extra trips and more work to manage your mail. It doesn’t necessarily make things easier.

Faster Delivery

A P.O. Box can sometimes get your mail faster because it’s already at the post office. Your letters and packages don’t have to go through extra steps. Hence, you can get them sooner.

However, this only helps if you check your box regularly. If you don’t, the speed advantage doesn’t really matter.

Other Services

When you rent a P.O. Box, your payment includes the box itself and two keys. The post office also offers extra features for an additional cost, such as:

• Accepting packages from other delivery services like DHL, FedEx, and UPS
• Forwarding your mail to another P.O. Box or a different address
• Longer access hours to your box
• Extra keys
• A real street address instead of a “P.O. Box” address

A virtual mailbox can be a better option if you want even more features, like:

• Getting real-time alerts when mail arrives
• Sorting or throwing away junk mail online
• Depositing checks without going to a bank

Before getting into how much is a P.O. Box, let us talk about how it works. A P.O. Box is a small locked mailbox inside a post office. You can rent one at your local post office if you don’t want mail delivered to your home or business. Each box has a separate address.

To get your mail, you have to go to the post office during its open hours. A P.O. Box gives you some privacy and can help protect your mail from theft. But it also takes extra time because you have to go there to pick up your mail.

A P.O. Box is a good choice if you want a safe place for your mail. Also, you can benefit from it if you want some of your mail, like for a home business, sent to a different address. You can rent a P.O. Box for three, six, or 12 months.

The P.O. Box cost can be different depending on several things. It usually starts from $4-$10 up to $25-$35 per month. That’s just the basic fee. Extra services can cost more.

P.O. Boxes come in five different sizes. You should pick one based on your budget, how much mail you get, and how often you can go pick it up. Most P.O. Boxes are about 14.75” deep. Not every size is available at every post office. But the main sizes are usually like this:

XS – Size 1

The smallest P.O. Box size is 3″ X 5.5″. It can hold about 10 to 15 letters and three rolled-up magazines. If you don’t get many packages or don’t get mail very often, this small box might be enough for you. It’s also good for people who can visit the post office regularly, because it won’t fill up too fast. The P.O. Box cost for the smallest mailbox is the lowest. But it depends on the location and how long you rent it.

S – Size 2

In some places, the USPS P.O. Box cost for this size can be as much as $129 for a 6-month plan. This box can hold at least 15 letters, up to 5 rolled-up magazines, or one small package (Small Priority Mail Flat Rate Box). If you get several letters, bills, magazines, or small bubble envelopes each week, this size should work well for you. The dimensions are 5″ X 5.5″.

M – Size 3

The third P.O. Box size is 5.5″ X 11″. The P.O. Box cost for these mailboxes can cost $261 or even more for a 6-month plan. This size is good if you get lots of magazines, large envelopes, or small packages. It can fit up to 2 Small Priority Mail Flat Rate Boxes at a time. Also, it works well for small business owners or families who get mail and packages every day. If you receive papers or documents that you don’t want folded, this is the size to pick.

L – Size 4

The Size L P.O. Box is 11″ X 11″. The P.O. Box cost for this size can cost up to $312 or more for six months. It can hold Priority Small and Medium Flat-Rate Boxes. A Small Flat-Rate Box is about 8 11/16″ x 5 7/16″ x 1 3/4″ on the outside and 8 5/8″ x 5 3/8″ x 1 5/8″ on the inside. A Medium Flat-Rate Box comes in two sizes: 11 1/4″ x 8 3/4″ x 6″ or 14″ x 12″ x 3 1/2″ on the outside and 11″ x 8 1/2″ x 5 1/2″ or 13 5/8″ x 11 7/8″ x 3 3/8″ on the inside. Even with these packages inside, this Size L box can still fit about 15 letters.

XL – Size 5

The largest USPS P.O. Box is 12″ X 22.5″. It can cost $437 or even more for a 6-month plan, making the P.O. Box cost quite expensive. This box is great for businesses that get lots of packages, envelopes, or letters each month. Also, it suits households that don’t check their box often or get many online orders.‍

The P.O. Box cost isn’t the same for everyone. Several things affect the price, so let’s look at them one by one.

Rental Length

Most post offices let you rent a P.O. Box for different lengths of time, like monthly, quarterly, or yearly. Renting month-to-month is flexible. But longer contracts usually give you a discount.

For example:

• 3 months = $48 → $16 per month
• 6 months = $83 → $13.83 per month
• 12 months = $155 → $12.92 per month

The availability of different contract lengths depends on your local post office. Some places only offer 1-year contracts. Hence, it is best to check with your nearest post office to see what they offer. 

Physical Location

ZIP codes can change how much does it cost for a P.O. Box. In cities, prices are usually higher because more people want P.O. Boxes and space is limited. P.O. Boxes are often cheaper in rural localities. But they might be less convenient depending on your needs. For example, an extra small P.O. Box in Times Square might cost $70 for three months. But the same box in rural North Carolina might cost $28 for three months.

The USPS classifies post offices as either “competitive” or “market dominant.” Competitive locations are areas where other mailbox or mail delivery services exist. The USPS P.O. Box cost is usually higher here. But they may include extra features like:

• Email or text notifications when mail arrives
• Signature on file for packages
• Longer service hours

The exact P.O. Box cost in a competitive location depends on the size of the box and its fee group.

P.O. Boxes in market dominant locations are much cheaper than in competitive locations because the USPS has little competition there. In these locations, P.O. Boxes are split into seven fee groups.

P.O. Box Size‍

A smaller P.O. Box is cheap and works well for letters and small packages. But if your business gets lots of packages or big envelopes, you’ll need a bigger box. Remember, bigger boxes cost more. If your business gets a lot of mail, a small box won’t be enough. In that case, a virtual mailbox that handles lots of mail might be a better choice.

Additional P.O. Box Fees

Besides the regular P.O. Box cost, there can be extra fees. In Market Dominant locations, you pay a $5 deposit for each key. In Competitive locations, there’s no key deposit. Also, it costs $12 to replace a key if you lose it. If you need a new lock or pay late, the fee is $25. These fees apply to both Competitive and Market Dominant P.O. Boxes.

If you think a P.O. Box might work for you, it’s important to know how much does it cost for a P.O. Box. Additionally, you must know how to set one up. Here’s what you can do:

Choose a Location

Pick a P.O. Box that’s easy for you to get to. If it’s far from your daily route, it could be more trouble than it’s worth. Remember, you’ll need to visit this post office regularly to check your mail. Also, please remember that location matters a lot in the USPS P.O. Box cost. 

Apply for a P.O. Box

Once you know the range of the P.O. Box cost, you can apply in person by visiting or online.

1. In person: Go to the post office where you want to rent a P.O. Box. Ask for a PS Form 1093 and fill it out correctly.
2. Online: First, make a USPS account by entering crucial details, like your name and contact details. Then use it to start your online application.

Pick a P.O. Box Size That Meets Your Needs

Choose a size that fits your current mail volume. Also, it is advisable to make a decision that leaves room for future growth. As your business grows, your mail will too. Furthermore, please remember that size can directly affect the UPS P.O. Box cost. Hence, select it based on your requirements and budget.

Select the Rental Duration

P.O. Boxes can be rented month-to-month or for longer periods. Short-term rentals are flexible. But longer contracts usually help reduce the P.O. Box cost. Read the details and pick the one that works best for you. Most businesses rent P.O. Boxes for a year.

Submit the P.O. Box Application

Next, you need to give your application to the USPS.

1. If you apply in person: Take these items to the post office customer service desk:

1. Your completed P.O. Box application form (PS Form 1093)
2. Two photo IDs (like a driver’s license, passport, or other government-authorized ID)
3. Proof of address (like a utility bill, lease, or mortgage statement)

1. If you applied online: Print your application and bring it, along with your IDs and proof of address, to the post office to submit it.

Pay the P.O. Box Cost and Activate

After submitting your application, you can pay the P.O. Box cost or fee as per your rental duration.  The post office will check the two forms of identification you provided. Then, you’ll get your keys or a code. And your P.O. Box is ready to use.

Check Your P.O. Box Often

Visit your box often so it doesn’t get full. If it does, or if a package is too big to fit, you’ll get a notice. Take the notice to the post office counter during business hours to pick up your mail.

Now that you know how much does a P.O. Box cost and what affects the pricing, you might be ready to sign up. But before you do, it’s smart to think about the pros and cons. This will help you make a good decision.

Why Should You Get a P.O. Box

1. Higher safety for mail and packages: A P.O. Box keeps your letters and deliveries secure. Instead of being left on your porch where they could be stolen, your mail is kept safely at the post office until you pick it up.
2. Keep your residential address private: Using a P.O. Box keeps your home address private and safe from people who might want to steal your mail. Hence, you can reduce the risk of mail theft, identity theft, or fraud.
3. Permanent delivery location: A P.O. Box stays the same even if you move. If you travel, your mail and packages will still go to your P.O. Box. So you don’t have to worry about missing anything.

What are the Limitations of a P.O. Box

1. Picking up mail and packages: Even with a P.O. Box, you still have to go to the post office to get your mail and packages. It can take up a lot of time, especially for small business owners who are busy.
2. Boxes can fill up quickly: If you don’t check your P.O. Box often, it can get full. Hence, a new mail piece might be returned to the sender, causing problems.
3. P.O. Boxes can only get postal mail and packages: Usually, only USPS letters and packages can be sent to a P.O. Box. Packages from FedEx or UPS can’t be delivered there.
4. P.O. Boxes cannot get mail that needs a signature: Some deliveries need a signature or a street address, like Certified Mail. A P.O. Box can’t be used for these. And post office workers aren’t allowed to sign for your packages.

If a P.O. Box doesn’t fit your business needs or you want additional services, like scanning and digital updates, you can look into its alternatives. Also, the P.O. Box cost might not feel worth it for you.

Virtual Mailboxes

A virtual mailbox lets you access and manage your mail and packages from anywhere.

Unlike a traditional P.O. Box, you can use your phone or computer to see and handle your mail. You don’t need to visit a physical location ever. 

One big benefit is that you get a list of actions or requests right on your phone. There is usually an easy-to-use dashboard, making mail management simple and digital. For example, when your virtual mailbox gets your mail, you can ask them to:

• Open and scan it so you can read it online
• Forward it to another address
• Shred or recycle it
• Hold it for you to pick up later

Many virtual mailbox service providers offer prices starting at just $5 monthly.

UPS Store Mailbox

A UPS Store mailbox is another option instead of a P.O. Box. It works like a P.O. Box but with extra features:

• 24/7 access to your mailbox
• Text notifications when mail or packages arrive
• Accepts packages from any carrier

Prices vary by location, so you’ll need to check what’s best for you. Also, please remember to compare them with the P.O. Box cost for a proper comparison.

Storage Locker Service

Another alternative is a storage locker service. Some businesses offer lockers where your mail and packages can be delivered. Not all locker services handle mail, so make sure to check before signing up.

After knowing the P.O. Box cost and the factors affecting it, you might seek other options for solving specific problems, like return mail management. PostGrid’s Virtual Mailboxes do exactly that. You can handle mail returns after your Print & Mail campaigns to ensure your staff does not have to deal with manual sorting. Also, you can automatically send business replies without in-house intervention.

Our Virtual Mailboxes also allow you to scan your received mailings, helping you view the outer envelope. It can give you an idea whether the reply is crucial. If needed, you can forward the returned mail to any address you want.

Talk to our sales team now for more information!